Mount Erebus Disaster
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The Mount Erebus disaster occurred on 28 November 1979 when Air New Zealand Flight 901 (TE901) flew into
Mount Erebus Mount Erebus () is the southernmost active volcano on Earth, located on Ross Island in the Ross Dependency in Antarctica. With a summit elevation of , it is the second most prominent mountain in Antarctica (after Mount Vinson) and the second ...
on
Ross Island Ross Island is an island in Antarctica lying on the east side of McMurdo Sound and extending from Cape Bird in the north to Cape Armitage in the south, and a similar distance from Cape Royds in the west to Cape Crozier in the east. The isl ...
,
Antarctica Antarctica () is Earth's southernmost and least-populated continent. Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean (also known as the Antarctic Ocean), it contains the geographic South Pole. ...
, killing all 237 passengers and 20 crew on board.
Air New Zealand Air New Zealand Limited () is the flag carrier of New Zealand. Based in Auckland, the airline operates scheduled passenger flights to 20 domestic and 28 international destinations in 18 countries, primarily within the Pacific Rim. The airline h ...
had been operating scheduled
Antarctic The Antarctic (, ; commonly ) is the polar regions of Earth, polar region of Earth that surrounds the South Pole, lying within the Antarctic Circle. It is antipodes, diametrically opposite of the Arctic region around the North Pole. The Antar ...
sightseeing flights since 1977. This flight left
Auckland Airport Auckland Airport is an international airport serving Auckland, the most populous city of New Zealand. It is the largest and busiest airport in the country, with over 18.7 million passengers served in the year ended December 2024. The airpor ...
in the morning and was supposed to spend a few hours flying over the Antarctic continent, before returning to Auckland in the evening via
Christchurch Christchurch (; ) is the largest city in the South Island and the List of cities in New Zealand, second-largest city by urban area population in New Zealand. Christchurch has an urban population of , and a metropolitan population of over hal ...
. The initial investigation concluded the accident was caused primarily by
pilot error In aviation, pilot error generally refers to an action or decision made by a Aircraft pilot#Airline, pilot that is a substantial contributing factor leading to an Aviation accidents and incidents, aviation accident. It also includes a pilot ...
, but public outcry led to the establishment of a Royal Commission of Inquiry into the crash. The commission, presided over by Justice Peter Mahon, concluded that the accident was primarily caused by a correction made to the coordinates of the flight path the night before the disaster, coupled with a failure to inform the flight crew of the change, with the result that the aircraft, instead of being directed by computer down
McMurdo Sound The McMurdo Sound is a sound in Antarctica, known as the southernmost passable body of water in the world, located approximately from the South Pole. Captain James Clark Ross discovered the sound in February 1841 and named it after Lieutenant ...
(as the crew had been led to believe), was instead rerouted to a path toward Mount Erebus. Justice Mahon's report accused Air New Zealand of presenting "an orchestrated litany of lies", and this led to changes in senior management at the airline. The
Judicial Committee of the Privy Council The Judicial Committee of the Privy Council (JCPC) is the highest court of appeal for the Crown Dependencies, the British Overseas Territories, some Commonwealth countries and a few institutions in the United Kingdom. Established on 14 August ...
later ruled that the finding of a conspiracy was a breach of
natural justice In English law, natural justice is technical terminology for the rule against bias (''nemo iudex in causa sua'') and the right to a fair hearing (''audi alteram partem''). While the term ''natural justice'' is often retained as a general conc ...
and not supported by the evidence. The accident is the deadliest in the history of Air New Zealand, the deadliest aviation accident in Antarctica, and New Zealand's deadliest peacetime disaster. Filmed deaths during aviation accidents and incidents


Flight and aircraft

Flight 901 was designed and marketed as a unique sightseeing experience, carrying an experienced Antarctic guide, who pointed out scenic features and landmarks using the aircraft's public-address system, while passengers enjoyed a low-flying sweep of McMurdo Sound. The flights left and returned to New Zealand the same day. The plane left Auckland International Airport at for Antarctica, and was scheduled to arrive back at Christchurch International Airport at after flying . The aircraft would make a 45-minute stop at Christchurch for refuelling and a crew change, before flying the remaining to Auckland, arriving at . Tickets for the November 1979 flights cost per person (equivalent to $ in ). Dignitaries including Sir Edmund Hillary had acted as guides on previous flights. Hillary was scheduled to act as the guide for the fatal flight of 28 November 1979, but had to cancel because of other commitments. His long-time friend and climbing companion, Peter Mulgrew, stood in as guide. The aircraft used for Antarctic flights were Air New Zealand's eight McDonnell Douglas DC-10-30
trijet A trijet is a jet aircraft powered by three jet engines. In general, passenger airline trijets are considered to be second-generation jet airliners, due to their innovative engine locations, in addition to the advancement of turbofan technology. ...
s. The aircraft on 28 November was registered ZK-NZP. The 182nd DC-10 to be built, and the fourth DC-10 to be introduced by Air New Zealand, ZK-NZP was handed over to the airline on 12 December 1974 at McDonnell Douglas's
Long Beach Long Beach is a coastal city in southeastern Los Angeles County, California, United States. It is the list of United States cities by population, 44th-most populous city in the United States, with a population of 451,307 as of 2022. A charter ci ...
plant. It had logged more than 20,700 flight hours prior to the crash.
Captain Captain is a title, an appellative for the commanding officer of a military unit; the supreme leader or highest rank officer of a navy ship, merchant ship, aeroplane, spacecraft, or other vessel; or the commander of a port, fire or police depa ...
Thomas James "Jim" Collins, age 45, was an experienced pilot who had accumulated 11,151 flight hours, including 2,872 hours in the DC-10. First Officer Gregory Mark "Greg" Cassin, age 37, had accumulated 7,934 flight hours, including 1,361 in the DC-10.
Flight Engineer A flight engineer (FE), also sometimes called an air engineer, is a member of an aircraft's flight crew who is responsible for monitoring and operating its complex aircraft systems. In the early era of aviation, the position was sometimes referr ...
Gordon Barrett Brooks, age 43, had 10,886 flight hours, including 3,000 in the DC-10 (Brooks had also been Flight Engineer on the Air New Zealand flight involved in the Cessna 188 Pacific rescue in 1978). Also on board were First Officer Graham Neville Lucas, age 39, and Flight Engineer Nicholas John "Nick" Moloney, age 44. Flight Engineer Moloney had a total of 6,468 flight hours, including 1,700 in the DC-10.


Accident


Circumstances surrounding the accident

Captain Collins and co-pilot Cassin had never flown to Antarctica before (while flight engineer Brooks had flown to Antarctica only once previously), but they were experienced pilots and were considered qualified for the flight. On 9 November 1979, 19 days before departure, the two pilots attended a briefing in which they were given a copy of the previous flight's
flight plan Flight plans are documents filed by a aviator, pilot or flight dispatcher with the local Air Navigation Service Provider (e.g., the Federal Aviation Administration, FAA in the United States) prior to departure which indicate the plane's planned ...
. The flight plan had been approved in 1977 by the Civil Aviation Division of the New Zealand
Department of Transport A ministry of transport or transportation is a ministry responsible for transportation within a country. It usually is administered by the ''minister for transport''. The term is also sometimes applied to the departments or other government a ...
and was along a track directly from
Cape Hallett Cape Hallett is a snow-free area (Antarctic oasis) on the northern tip of the Hallett Peninsula on the Ross Sea coast of Victoria Land, East Antarctica. Cape Adare lies to the north. History In 1956, during Operation Deep Freeze II, was damag ...
to the McMurdo
non-directional beacon A non-directional beacon (NDB) or non-directional radio beacon is a radio beacon which does not include directional information. Radio beacons are radio transmitters at a known location, used as an aviation or marine navigational aid. NDB are i ...
(NDB), which, coincidentally, entailed flying almost directly over the peak of
Mount Erebus Mount Erebus () is the southernmost active volcano on Earth, located on Ross Island in the Ross Dependency in Antarctica. With a summit elevation of , it is the second most prominent mountain in Antarctica (after Mount Vinson) and the second ...
. Due to a typing error in the coordinates when the route was computerised, however, the printout from Air New Zealand's ground computer system that was presented at the 9 November briefing corresponded to a southerly flight path down the middle of the wide
McMurdo Sound The McMurdo Sound is a sound in Antarctica, known as the southernmost passable body of water in the world, located approximately from the South Pole. Captain James Clark Ross discovered the sound in February 1841 and named it after Lieutenant ...
, about to the west of Mount Erebus. The majority of the previous 13 flights had also entered this flight plan's coordinates into their aircraft inertial navigational system and flown the McMurdo Sound route, unaware that the route flown did not correspond with the approved route. Captain Leslie Simpson, the pilot of a flight on 14 November and also present at the 9 November briefing, compared the coordinates of the McMurdo
tactical air navigation system A tactical air navigation system, commonly referred to by the acronym TACAN, is a navigation system initially designed for naval aircraft to acquire moving landing platforms (i.e., ships) and later expanded for use by other military aircraft. It p ...
(TACAN) navigation beacon (about east of McMurdo NDB), and the McMurdo waypoint that his flight crew had entered into the
inertial navigation system An inertial navigation system (INS; also inertial guidance system, inertial instrument) is a navigation device that uses motion sensors (accelerometers), rotation sensors (gyroscopes) and a computer to continuously calculate by dead reckoning th ...
(INS), and was surprised to find a large distance between the two. After his flight, Captain Simpson advised Air New Zealand's navigation section of the difference in positions. For reasons that were disputed, this triggered Air New Zealand's navigation section to update the McMurdo waypoint coordinates stored in the ground computer to correspond with the coordinates of the McMurdo TACAN beacon, despite this also not corresponding with the approved route. The Air New Zealand navigation section changed the McMurdo waypoint co-ordinate stored in the ground computer system around on the morning of the flight from to . Crucially, the flight crew of Flight 901 was not notified of the change. The flight plan printout given to the crew on the morning of the flight, which was subsequently entered by them into the aircraft's INS, differed from the flight plan presented at the 9 November briefing and from Captain Collins' map mark-ups, which he had prepared the night before the fatal flight. The key difference was that the flight plan presented at the briefing corresponded to a track down McMurdo Sound, giving Mount Erebus a wide berth to the east, whereas the flight plan printed on the morning of the flight corresponded to a track that coincided with Mount Erebus, which would result in a collision with Mount Erebus if this leg were flown at an altitude less than , 12,448 feet (3,794 m) being the top peak of Mount Erebus. The Air New Zealand computer program was altered so that the standard telex forwarded to American
air traffic controller An Air traffic controller (ATC) is a person responsible for the coordination of traffic in their assigned airspace. Typically stationed in area control centers or control towers, they monitor the position, speed, and altitude of aircraft and c ...
s (ATCs) at the United States Antarctic science facility at
McMurdo Station McMurdo Station is an American Antarctic research station on the southern tip of Ross Island. It is operated by the United States through the United States Antarctic Program (USAP), a branch of the National Science Foundation. The station is ...
displayed the word "McMurdo", rather than the coordinates of latitude and longitude, for the final waypoint. During the subsequent inquiry, Justice Mahon concluded that this was a deliberate attempt to conceal from the United States authorities that the flight plan had been changed, probably because it was known that US
air traffic control Air traffic control (ATC) is a service provided by ground-based air traffic controllers who direct aircraft on the ground and through a given section of controlled airspace, and can provide advisory services to aircraft in non-controlled air ...
(ATC) would lodge an objection to the new flight path. The flight had earlier paused during the approach to McMurdo Sound to carry out a descent, via a figure-eight manoeuvre, through a gap in the low cloud base (later estimated to be at around ) while over water to establish visual contact with surface landmarks and give the passengers a better view. The flight crew either was unaware of or ignored the approved route's minimum safe altitude (MSA) of for the approach to Mount Erebus, and in the sector south of Mount Erebus (and then only when the cloud base was at or better). Photographs and news stories from previous flights showed that many of these had been flown at levels substantially below the route's MSA. In addition, preflight briefings for previous flights had approved descents to any altitude authorised by the US ATC at McMurdo Station. As the US ATC expected Flight 901 to follow the same route as previous flights down McMurdo Sound, and in accordance with the route waypoints previously advised by Air New Zealand to them, the US ATC advised Flight 901 that it had a radar that could let them down to . The radar equipment did not pick up the aircraft, however, and the crew also experienced difficulty establishing VHF communications. The
distance measuring equipment In aviation, distance measuring equipment (DME) is a radio navigation technology that measures the slant range (distance) between an aircraft and a ground station by timing the propagation delay of radio signals in the frequency band between 9 ...
did not lock onto the McMurdo TACAN for any useful period.
Cockpit voice recorder A flight recorder is an electronic recording device placed in an aircraft for the purpose of facilitating the investigation of aviation accidents and incidents. The device may often be referred to colloquially as a "black box", an outdated nam ...
(CVR) transcripts from the last minutes of the flight before impact with Mount Erebus indicated that the flight crew believed they were flying over McMurdo Sound, well to the west of Mount Erebus and with the
Ross Ice Shelf The Ross Ice Shelf is the largest ice shelf of Antarctica (, an area of roughly and about across: about the size of France). It is several hundred metres thick. The nearly vertical ice front to the open sea is more than long, and between high ...
visible on the horizon, when in reality they were flying directly toward the mountain. Despite most of the crew being engaged in identifying visual landmarks at the time, they never perceived the mountain directly in front of them. About 6 minutes after completing a descent in visual meteorological conditions, Flight 901 collided with the mountain at an altitude around , on the lower slopes of the 12,448-ft-tall (3,794 m) mountain. Passenger photographs taken seconds before the collision removed all plausibility of a "flying in cloud" theory, showing perfectly clear visibility well beneath the cloud base, with landmarks to the left and to the right of the aircraft visible.


Changes to the coordinates and departure

The crew put the coordinates into the plane's computer before they departed at from Auckland International Airport. Unknown to them, the coordinates had been modified earlier that morning to correct the error introduced previously and undetected until then. The crew evidently did not check the destination waypoint against a topographical map (as did Captain Simpson on the flight of 14 November) or they would have noticed the change. Charts for the Antarctic were not available to the pilot for planning purposes, being withheld until the flight was about to depart. The charts eventually provided, which were carried on the aircraft, were neither comprehensive enough nor large enough in scale to support detailed plotting. These new coordinates changed the flight plan to track east of their understanding. The coordinates programmed the plane to overfly Mount Erebus, a volcano, instead of down McMurdo Sound. About four hours after a smooth take-off, the flight was away from McMurdo Station. The radio communications centre there allowed the pilots to descend to and to continue "visually". Air-safety regulations at the time did not allow flights to descend to lower than , even in good weather, although Air New Zealand's own travel magazine showed photographs of previous flights clearly operating below . Collins believed the plane was over open water.


Crash into Mount Erebus

Collins told McMurdo Station that he would be dropping to , at which point he switched control of the aircraft to the
autopilot An autopilot is a system used to control the path of a vehicle without requiring constant manual control by a human operator. Autopilots do not replace human operators. Instead, the autopilot assists the operator's control of the vehicle, allow ...
. Outside, a layer of clouds blended with the white snow-covered volcano, forming a sector whiteout – no contrast between ground and sky was visible to the pilots. The effect deceived everyone on the flight deck, making them believe that the white mountainside was the Ross Ice Shelf, a huge expanse of floating ice derived from the great ice sheets of Antarctica, which was in fact now behind the mountain. As it was little understood, even by experienced polar pilots, Air New Zealand had provided no training for the flight crew on the sector whiteout phenomenon. Consequently, the crew thought they were flying along McMurdo Sound, when they were actually flying over Lewis Bay in front of Mount Erebus. At 12:49 pm, the
ground proximity warning system A Ground Proximity Warning System (GPWS) is a system designed to alert pilots if their aircraft is in immediate danger of flying into the ground or an obstacle. The United States Federal Aviation Administration (FAA) defines GPWS as a type of ...
 (GPWS) began sounding a series of "whoop, whoop, pull up" alarms, warning that the plane was dangerously close to terrain. The CVR recorded the following: : GPWS: "Whoop whoop. Pull up. Whoop whoop..." : F/E: "Five hundred feet." : GPWS: "...Pull up." : F/E: "Four hundred feet." : GPWS: "Whoop, whoop. Pull up. Whoop whoop. Pull up." : CA: "Go-around power please." : GPWS: "Whoop, whoop. Pull-" : CAM: ound of impact: End of recording. The pilots had begun a terrain escape manoeuvre by applying full (
go-around In aviation, a go-around is an aborted landing of an aircraft that is on Final_approach_(aeronautics), final approach or has already touched down. A go-around can either be initiated by the pilot flying or requested by air traffic control for var ...
) power, but it was too late. Six seconds later, the plane crashed into the side of Mount Erebus and exploded, instantly killing everyone on board. The accident occurred at 12:50 pm at a position of and an elevation of
above mean sea level Height above mean sea level is a measure of a location's vertical distance (height, elevation or altitude) in reference to a vertical datum based on a historic mean sea level. In geodesy, it is formalized as orthometric height. The zero level ...
. McMurdo Station attempted to contact the flight after the crash, and informed Air New Zealand headquarters in Auckland that communication with the aircraft had been lost. United States search-and-rescue personnel were placed on standby.


Nationalities of passengers and crew

The nationalities of the passengers and crew included:


Rescue and recovery


Initial search and discovery

At 2:00 pm, the
United States Navy The United States Navy (USN) is the naval warfare, maritime military branch, service branch of the United States Department of Defense. It is the world's most powerful navy with the largest Displacement (ship), displacement, at 4.5 millio ...
released a situation report stating: Data gathered at 3:43 pm were added to the
situation report A command center (often called a war room) is any place that is used to provide centralized command for some purpose. While frequently considered to be a Military base, military facility, these can be used in many other cases by governments ...
, stating that the visibility was . Also, six aircraft had been launched to find the flight. Flight 901 was due to arrive back at Christchurch at 6:05 pm for a stopover including refuelling and a crew change before completing the journey back to Auckland. Around 50 passengers were also supposed to disembark at Christchurch. Airport staff initially told the waiting families that the flight being slightly late was not unusual, but as time went on, it became clear that something was wrong. At 9:00 pm, about half an hour after the plane would have run out of fuel, Air New Zealand informed the press that it believed the aircraft to be lost. Rescue teams searched along the assumed flight path, but found nothing. At 12:55 am, the crew of a United States Navy aircraft discovered unidentified debris along the side of Mount Erebus. No survivors could be seen. Around 9:00 am, 20 hours after the crash, helicopters with search parties managed to land on the side of the mountain. They confirmed that the wreckage was that of Flight 901 and that all 237 passengers and 20 crew members had been killed. The DC-10's altitude at the time of the collision was . The
vertical stabiliser A vertical stabilizer or tail fin is the static part of the vertical tail of an aircraft. The term is commonly applied to the assembly of both this fixed surface and one or more movable rudders hinged to it. Their role is to provide control, sta ...
section of the plane, with the
koru The is a spiral shape evoking a newly Circinate vernation, unfurling frond from a Cyathea dealbata, silver fern frond. It is an integral symbol in Māori people, Māori art, bone carving, carving and Tā moko, tattooing, where it symbolise ...
logo clearly visible, was found in the snow. Bodies and fragments of the aircraft were flown back to Auckland for identification. The remains of 44 of the victims were not individually identified. A funeral was held for them on 22 February 1980.


Operation Overdue

The recovery effort of Flight 901 was called "Operation Overdue." Efforts for recovery were extensive, owing in part to the pressure from Japan, as 24 passengers had been Japanese. The operation lasted until 9 December 1979, with up to 60 recovery workers on site at a time. A team of New Zealand Police officers and a mountain-face rescue team were dispatched on a No. 40 Squadron
C-130 Hercules The Lockheed C-130 Hercules is an American four-engine turboprop military transport aircraft designed and built by Lockheed Corporation, Lockheed (now Lockheed Martin). Capable of using unprepared runways for takeoffs and landings, the C-130 w ...
aircraft. The job of individual identification took many weeks, and was largely done by teams of pathologists, dentists, and police. The mortuary team was led by Inspector Jim Morgan, who collated and edited a report on the recovery operation. Recordkeeping had to be meticulous because of the number and fragmented state of the human remains that had to be identified to the satisfaction of the
coroner A coroner is a government or judicial official who is empowered to conduct or order an inquest into the manner or cause of death. The official may also investigate or confirm the identity of an unknown person who has been found dead within th ...
. The exercise resulted in 83% of the deceased passengers and crew eventually being identified, sometimes from evidence such as a finger capable of yielding a print, or keys in a pocket. In 2006, the New Zealand Special Service Medal (Erebus) was instituted to recognise the service of New Zealanders, and citizens of the United States of America and other countries, who were involved in the body recovery, identification, and crash investigation phases of Operation Overdue. On 5 June 2009, the New Zealand government recognised some of the Americans who assisted in Operation Overdue during a ceremony in Washington, DC. A total of 40 Americans, mostly Navy personnel, are eligible to receive the medal.


Inquiries

Despite Flight 901 crashing in one of the most isolated parts of the world, evidence from the crash site was extensive. Both the
cockpit voice recorder A flight recorder is an electronic recording device placed in an aircraft for the purpose of facilitating the investigation of aviation accidents and incidents. The device may often be referred to colloquially as a "black box", an outdated nam ...
and the
flight data recorder A flight recorder is an electronic recording device placed in an aircraft for the purpose of facilitating the investigation of aviation accidents and incidents. The device may often be referred to colloquially as a "black box", an outdated nam ...
were in working order and able to be deciphered. Extensive photographic footage, including video, from the moments before the crash was available; being a sightseeing flight, most passengers were carrying cameras, from which the majority of the film could be developed.


Official accident report

The accident report compiled by New Zealand's chief inspector of air accidents, Ron Chippindale, was released on 12 June 1980. It cited
pilot error In aviation, pilot error generally refers to an action or decision made by a Aircraft pilot#Airline, pilot that is a substantial contributing factor leading to an Aviation accidents and incidents, aviation accident. It also includes a pilot ...
as the principal cause of the accident and attributed blame to the decision of Collins to descend below the customary minimum altitude level, and to continue at that altitude when the crew was unsure of the plane's position. The customary minimum altitude prohibited descent below even under good weather conditions, but a combination of factors led the captain to believe the plane was over the sea (the middle of McMurdo Sound and few small low islands), and previous Flight 901 pilots had regularly flown low over the area to give passengers a better view, as evidenced by photographs in Air New Zealand's own travel magazine and by first-hand accounts of personnel based on the ground at NZ's Scott Base.


Mahon inquiry

In response to public demand, the
New Zealand government The New Zealand Government () is the central government through which political authority is exercised in New Zealand. As in most other parliamentary democracies, the term "Government" refers chiefly to the executive branch, and more specifica ...
announced a further one-man Royal Commission of Inquiry into the accident, to be performed by Justice Peter Mahon. This Royal Commission was initially handicapped in that the deadline was extremely short; originally set for 31 October 1980, it was subsequently extended four times. The report was released on 27 April 1981, and cleared the crew of blame. Mahon concluded that the single, dominant and effective cause of the crash was Air New Zealand's alteration of the flight plan waypoint coordinates in the ground navigation computer without advising the crew. The new flight plan took the aircraft directly over the mountain, rather than along its flank. Due to whiteout conditions, "a malevolent trick of the polar light", the crew were unable to visually identify the mountain in front of them. Furthermore, they may have experienced a rare meteorological phenomenon called sector whiteout, which creates the visual illusion of a flat horizon far in the distance. A very broad gap between cloud layers appeared to allow a view of the distant Ross Ice Shelf and beyond. Mahon noted that the flight crew, with many thousands of hours of flight time between them, had considerable experience with the extreme accuracy of the aircraft's
inertial navigation system An inertial navigation system (INS; also inertial guidance system, inertial instrument) is a navigation device that uses motion sensors (accelerometers), rotation sensors (gyroscopes) and a computer to continuously calculate by dead reckoning th ...
. Mahon also found that the preflight briefings for previous flights had approved descents to any altitude authorised by the US ATC at McMurdo Station, and that the radio communications centre at McMurdo Station had indeed authorised Collins to descend to , below the minimum safe level of . In his report, Mahon found that airline executives and senior pilots had engaged in a
conspiracy A conspiracy, also known as a plot, ploy, or scheme, is a secret plan or agreement between people (called conspirers or conspirators) for an unlawful or harmful purpose, such as murder, treason, or corruption, especially with a political motivat ...
to whitewash the inquiry, accusing them of "an orchestrated litany of lies" by covering up evidence and lying to investigators. Mahon found that, in the original report, Chippindale had a poor grasp of the flying involved in jet-airline operation, as he (and the New Zealand CAA in general) was typically involved in investigating simple
light aircraft A light aircraft is an aircraft that has a Maximum Takeoff Weight, maximum gross takeoff weight of or less.Crane, Dale: ''Dictionary of Aeronautical Terms, third edition'', page 308. Aviation Supplies & Academics, 1997. Light aircraft are use ...
crashes. Chippindale's investigation techniques were revealed as lacking in rigour, which allowed errors and avoidable gaps in knowledge to appear in reports. Consequently, Chippindale entirely missed the importance of the flight-plan change and the rare meteorological conditions of Antarctica. Had the pilots been informed of the flight plan change, the crash would have been avoided.


Court proceedings


Judicial review

On 20 May 1981, Air New Zealand applied to the
High Court of New Zealand The High Court of New Zealand () is the superior court of New Zealand. It has general jurisdiction and responsibility, under the Senior Courts Act 2016, as well as the High Court Rules 2016, for the administration of justice throughout New Zeala ...
for
judicial review Judicial review is a process under which a government's executive, legislative, or administrative actions are subject to review by the judiciary. In a judicial review, a court may invalidate laws, acts, or governmental actions that are in ...
of Mahon's order that it pay more than half the costs of the Mahon inquiry, and for judicial review of some of the findings of fact Mahon had made in his report. The application was referred to the
Court of Appeal An appellate court, commonly called a court of appeal(s), appeal court, court of second instance or second instance court, is any court of law that is empowered to Hearing (law), hear a Legal case, case upon appeal from a trial court or other ...
, which unanimously set aside the costs order. The Court of Appeal, by majority, though, declined to go any further, and in particular, declined to set aside Mahon's finding that members of the management of Air New Zealand had conspired to commit
perjury Perjury (also known as forswearing) is the intentional act of swearing a false oath or falsifying an affirmation to tell the truth, whether spoken or in writing, concerning matters material to an official proceeding."Perjury The act or an insta ...
before the inquiry to cover up the errors of the ground staff.


Appeal to the Judicial Committee of the Privy Council

Mahon then appealed to the
Judicial Committee of the Privy Council The Judicial Committee of the Privy Council (JCPC) is the highest court of appeal for the Crown Dependencies, the British Overseas Territories, some Commonwealth countries and a few institutions in the United Kingdom. Established on 14 August ...
in London against the Court of Appeal's decision. His findings as to the cause of the accident, namely reprogramming of the aircraft's flight plan by the ground crew, who then failed to inform the flight crew, had not been challenged before the Court of Appeal, so were not challenged before the Privy Council. His conclusion that the crash was the result of the aircrew being misdirected as to their flight path, not due to pilot error, therefore remained. Regarding the issue of Air New Zealand stating a minimum altitude of 6,000 feet for pilots in the vicinity of McMurdo Base, the Judicial Committee stated, However, the
Law Lords Lords of Appeal in Ordinary, commonly known as Law Lords, were judges appointed under the Appellate Jurisdiction Act 1876 to the British House of Lords, as a committee of the House, effectively to exercise the judicial functions of the House of ...
of the Judicial Committee under the chair of
Lord Diplock William John Kenneth Diplock, Baron Diplock, (8 December 1907 – 14 October 1985) was a British barrister and judge who served as a lord of appeal in ordinary between 1968 and until his death in 1985. Appointed to the English High Court in ...
effectively agreed with some of the views of the minority in the Court of Appeal in concluding that Mahon had acted in breach of natural justice by finding that Air New Zealand management had been engaged in a
conspiracy A conspiracy, also known as a plot, ploy, or scheme, is a secret plan or agreement between people (called conspirers or conspirators) for an unlawful or harmful purpose, such as murder, treason, or corruption, especially with a political motivat ...
, an accusation which they determined was not supported by the evidence. In its judgment, delivered on 20 October 1983, the Judicial Committee therefore dismissed Mahon's appeal. Aviation researcher John King wrote in his book ''New Zealand Tragedies, Aviation'': "Exhibit 164" was a photocopied diagram of McMurdo Sound showing a southbound flight path passing west of Ross Island and a northbound path passing the island on the east. The diagram did not extend sufficiently far south to show where, how, or even if they joined, and left the two paths disconnected. Evidence had been given to the effect that the diagram had been included in the flight crew's briefing documentation.


Legacy of the disaster

The crash of Flight 901 is one of New Zealand's three deadliest disasters – the others being the 1874 ''Cospatrick'' sailing ship disaster in which 470 people died, and the
1931 Hawke's Bay earthquake The 1931 Hawke's Bay earthquake, also known as the Napier earthquake, occurred in New Zealand at 10:47am on 3 February, killing 256,The exact number of deaths varies according to different sources; the ''New Zealand Listener'' article cited be ...
, which killed 256 people. At the time of the disaster, it was the -deadliest air crash of all time. , the crash remains Air New Zealand's deadliest accident, as well as New Zealand's deadliest peacetime disaster (excluding the ''Cospatrick'' sailing ship disaster, which happened south of the
Cape of Good Hope The Cape of Good Hope ( ) is a rocky headland on the Atlantic Ocean, Atlantic coast of the Cape Peninsula in South Africa. A List of common misconceptions#Geography, common misconception is that the Cape of Good Hope is the southern tip of Afri ...
, en route to Auckland). Flight 901, in conjunction with the crash of
American Airlines Flight 191 American Airlines Flight 191 was a regularly scheduled domestic passenger flight from O'Hare International Airport in Chicago to Los Angeles International Airport. On the afternoon of May 25, 1979, the McDonnell Douglas DC-10 operating th ...
in Chicago six months earlier (25 May), severely hurt the reputation of the McDonnell Douglas DC-10. Following the Chicago crash, the FAA withdrew the DC-10's
type certificate A type certificate signifies the airworthiness of a particular category of aircraft, according to its manufacturing design (''type design''). Certification confirms that the aircraft of a new type intended for serial production is in compliance w ...
on 6 June, which grounded all U.S.-registered DC-10s and forbade any foreign government that had a bilateral agreement with the United States regarding aircraft certifications from flying their DC-10s, which included Air New Zealand's seven DC-10s. The Air New Zealand DC-10 fleet was grounded until the FAA measures were rescinded five weeks later, on 13 July, after all carriers had completed modifications that responded to issues discovered from the American Airlines Flight 191 incident. Flight 901 was the third-deadliest accident involving a DC-10, following
Turkish Airlines Flight 981 Turkish Airlines Flight 981 (TK981/THY981) was a scheduled flight from Istanbul Yeşilköy Airport to London Heathrow Airport, with an intermediate stop at Orly Airport in Paris. On 3 March 1974, the McDonnell Douglas DC-10 operating the fl ...
and American Airlines Flight 191. The event marked the beginning of the end for Air New Zealand's DC-10 fleet, although talk existed before the accident of replacing the aircraft; DC-10s were replaced by
Boeing 747 The Boeing 747 is a long-range wide-body aircraft, wide-body airliner designed and manufactured by Boeing Commercial Airplanes in the United States between 1968 and 2023. After the introduction of the Boeing 707, 707 in October 1958, Pan Am ...
s from mid-1981, and the last Air New Zealand DC-10 flew in December 1982. The occurrence also spelled the end of commercially operated Antarctic sightseeing flights – Air New Zealand cancelled all its Antarctic flights after Flight 901, and
Qantas Qantas ( ), formally Qantas Airways Limited, is the flag carrier of Australia, and the largest airline by fleet size, international flights, and international destinations in Australia and List of largest airlines in Oceania, Oceania. A foundi ...
suspended its Antarctic flights in February 1980, only returning on a limited basis again in 1994. Almost all of the aircraft's wreckage still lies where it came to rest on the slopes of Mount Erebus, as both its remote location and its weather conditions can hamper any further recovery operations. During the cold periods, the wreckage is buried under a layer of snow and ice. During warm periods, when snow recedes, it is visible from the air. Following the incident, all charter flights to Antarctica from New Zealand ceased, and were not resumed until 2013, when a
Boeing 747-400 The Boeing 747-400 is a large, long-range wide-body airliner produced by Boeing Commercial Airplanes, an advanced variant of the initial Boeing 747. The ''Advanced Series 300'' was announced at the September 1984 Farnborough Airshow, target ...
chartered from Qantas set off from Auckland for a sightseeing flight over the continent. Justice Mahon's report was finally tabled in Parliament by the then-Minister of Transport, Maurice Williamson, in 1999. In the New Zealand Queen's Birthday Honours list in June 2007, Captain Gordon Vette was awarded the
ONZM The New Zealand Order of Merit () is an order of merit in the New Zealand royal honours system. It was established by royal warrant (document), royal warrant on 30 May 1996 by Elizabeth II, Monarchy of New Zealand, Queen of New Zealand, "for th ...
(Officer of the New Zealand Order of Merit), recognising his services in assisting Justice Mahon during the Erebus inquiry. Vette's book, ''Impact Erebus'', provides a commentary of the flight, its crash, and the subsequent investigations. In 2008, Justice Mahon was posthumously awarded the Jim Collins Memorial Award by the New Zealand Airline Pilots Association for exceptional contributions to air safety, "in forever changing the general approach used in transport accidents investigations world wide." In 2009, Air New Zealand's CEO Rob Fyfe apologised to all those affected who did not receive appropriate support and compassion from the company following the incident, and unveiled a commemorative sculpture at its headquarters. On 28 November 2019, the 40th anniversary of the disaster, New Zealand Prime Minister
Jacinda Ardern Dame Jacinda Kate Laurell Ardern ( ; born 26 July 1980) is a New Zealand politician and activist who was the 40th prime minister of New Zealand and Leader of the New Zealand Labour Party, leader of the Labour Party from 2017 to 2023. She was ...
, along with the national government, issued a formal apology to the families of the victims. Ardern " xpressedregret on behalf of Air New Zealand for the accident", and " pologisedon behalf of the airline which 40 years ago failed in its duty of care to its passengers and staff." The registration of the crashed aircraft, ZK-NZP, has not been reissued.


Memorials

A wooden cross was erected on the mountain above Scott Base to commemorate the accident. It was replaced in 1986 with an aluminium cross after the original was eroded by low temperatures, wind, and moisture. The memorial for the 16 passengers who were unidentifiable and the 28 whose bodies were never found is at Waikumete Cemetery in Glen Eden, Auckland. It was dedicated on the first anniversary of the tragedy, in November 1980. Beside the memorial is a Japanese cherry tree, planted as a memorial to the 24 Japanese passengers who died on board Flight 901. A memorial to the crew members of Flight 901 is located adjacent to
Auckland Airport Auckland Airport is an international airport serving Auckland, the most populous city of New Zealand. It is the largest and busiest airport in the country, with over 18.7 million passengers served in the year ended December 2024. The airpor ...
, on Tom Pearce Drive at the eastern end of the airport zone. On 4 December 1979, 6 days after the crash, St Matthews in the City Church held a Memorial Service for the victims of the accident. Just before the 10 year Anniversary, a memorial stained glass window was installed in the church and dedicated to the 257 people who lost their lives. To mark the 25th anniversary of the Erebus disaster, a wreath-laying ceremony and memorial service was held on Antarctica in 2004. In January 2010, a sculpted
koru The is a spiral shape evoking a newly Circinate vernation, unfurling frond from a Cyathea dealbata, silver fern frond. It is an integral symbol in Māori people, Māori art, bone carving, carving and Tā moko, tattooing, where it symbolise ...
containing letters written by the loved ones of those who died was placed next to the Antarctic cross. It was originally to have been placed at the site by six relatives of the victims on the 30th anniversary of the crash, 28 November 2009, but this was delayed for two months due to bad weather. It was planned for a second koru capsule, mirroring the first capsule, to be placed at Scott Base in 2011. The book-length poem "Erebus" by American writer Jane Summer (Sibling Rivalry Press, 2015) memorialises a close friend who died in the tragedy, and in a feat of 'investigative poetry', explores the chain of flawed decisions that caused the crash. In 2019, it was announced that a national memorial is to be installed in Parnell Rose Gardens, with a relative of one of the crash victims stating that it was the right place. However, local residents criticised the memorial's location, saying that it would "destroy the ambiance of the park". After numerous delays, construction was set to begin in October 2021. However, due to an investigation by the Ombudsman, construction was limited to reversible "preparation works". The delays were caused by protests against the construction, fearing that it could endanger the giant
pōhutukawa Pōhutukawa (''Metrosideros excelsa''), also known as the New Zealand Christmas tree, or iron tree, is a coastal evergreen tree in the Myrtus, myrtle family, Myrtaceae, that produces a brilliant display of red (or occasionally orange, yellow o ...
in the park. In March 2022, the Ombudsman released his report, stating that Ministry of Culture & Heritage "should have consulted more widely before forming its preference for a location," and that it "acted unreasonably in October 2019, when it failed to reply to correspondence about resource consent for the proposed memorial." Construction was halted upon the recommendation given, which "called for the ministry to resolve any grievances before construction begins." By 10 February 2023, the Ombudsman was satisfied by the actions taken to implement his recommendations. However, the 2023 Auckland Anniversary Weekend floods and
Cyclone Gabrielle Severe Tropical Cyclone Gabrielle was a powerful and destructive tropical cyclone that devastated parts of the North Island of New Zealand and affected parts of Vanuatu and Norfolk Island in February 2023. It is the costliest tropical cyclone ...
led to "significant land slips occurring along the cliff line," including one in the vicinity of the memorial site. The geotechnical engineering assessment undertaken concluded that "the land was unsafe to build the memorial on", forcing them to abandon the plans to build the memorial in Parnell Rose Gardens, and to find a new memorial site.


In popular culture

The crash coincided with the Air New Zealand Shell Open, a golf tournament sponsored by Air New Zealand. CEO Morrie Davis was playing the pro-am when he first heard word that the plane was "lost." Air New Zealand thought about cancelling the tournament but decided against it. A television miniseries, '' Erebus: The Aftermath'', focusing on the investigation and the Royal Commission of Inquiry, was broadcast in New Zealand and Australia in 1988. The phrase "an orchestrated litany of lies" entered New Zealand popular culture for some years. In 2014, a feature-length docudrama, ''Operation Overdue,'' on the disaster was produced for
TVNZ Television New Zealand (, "Te Reo Tātaki" meaning "The Leading Voice"), more commonly referred to as TVNZ, is a New Zealand state-owned media company and Crown entity. The company operates a television network, streaming service, and news se ...
, focusing on the namesake recovery mission and 11 police officers who helped recover victims' bodies. In 2019, two in-depth podcast series were produced on the 40th anniversary of the disaster by RNZ and the NZ Herald. The disaster features in the fifth episode of season two of
The Weather Channel The Weather Channel (TWC) is an American pay television television channel, channel owned by Weather Group, LLC, a subsidiary of Allen Media Group. The channel's headquarters are located in Atlanta, Georgia. Launched on May 2, 1982, the channel ...
documentary series '' Why Planes Crash''. The episode is titled "Sudden Impact", and was first aired in January 2015.


Official records

Material related to the Erebus disaster and inquiry is held (with other Antarctica items from the Antarctic Division of the (former) Department of Scientific and Industrial Research (DSIR)) by
Archives New Zealand Archives New Zealand ( Māori: ''Te Rua Mahara o te Kāwanatanga'') is New Zealand's national archive and the official guardian of its public archives. As the government's recordkeeping authority, it administers the Public Records Act 2005 an ...
, Christchurch. There are 168 record items, of which twelve are restricted access (7 photos, 4 audio cassettes and 1 file of newspaper clippings from Air New Zealand). Other files are held by Archives New Zealand at Auckland, Wellington, Christchurch and Dunedin. These include files of the Royal Commission (Agency AASJ, accession W2802) and the New Zealand Police (Agencies AAAJ, BBAN; many are restricted).


See also

*
Aviation accidents and incidents An aviation accident is an event during aircraft operation that results serious injury, death, or significant destruction. An aviation incident is any operating event that compromises safety but does not escalate into an aviation accident. Pre ...
*
List of disasters in Antarctica by death toll The following is a list of known disasters in Antarctica which have resulted in fatalities. It includes disasters which happened on land, as well as in the waters surrounding the continent. See also * List of disasters in Australia by death tol ...
* Sensory illusions in aviation * Similar accidents and incidents: ** American Airlines Flight 965, a flight which crashed into terrain after the pilots altered the coordinates. ** Aviateca Flight 901, a flight of the same number which also collided with a volcano. ** Prinair Flight 277 ** Ansett New Zealand Flight 703 **
New Zealand National Airways Corporation Flight 441 New Zealand National Airways Corporation Flight 441 (NZ441) was a scheduled flight of the National Airways Corporation (New Zealand), New Zealand National Airways Corporation from Whenuapai, Auckland to Tauranga. On 3 July 1963 at approximately ...
** Uruguayan Air Force Flight 571, another flight which crashed into terrain due to deviation from the planned flight route


Notes


References


Further reading

* NZAVA Operation Deep Freeze – The New Zealand Story, 2002. * Operation Overdue–NZAVA Archives 2002. * C.H.N. L'Estrange, The Erebus enquiry: a tragic miscarriage of justice, Auckland, Air Safety League of New Zealand, 1995 * Stuart Macfarlane, The Erebus papers: edited extracts from the Erebus proceedings with commentary, Auckland, Avon Press, 1991
Report of the Royal Commission to Inquire into the Crash on Mount Erebus, Antarctica of a DC10 Aircraft Operated by Air New Zealand Limited
(66 Mb file), Wellington, Government Printer, 1981 (Alternate located a
Archives New Zealand
item number ABVX 7333 W4772/5025/3/79-139 part 3) * R Chippendale

Office of Air Accidents Investigation, New Zealand Ministry of Transport, Wellington, 1980 (only some parts there)

including a section about Erebus


External links

*  
The Erebus Story – Loss of TE901 (includes Newspaper Articles and Video footage)
– New Zealand Air Line Pilots' Association *

* ttps://www.fss.aero/accident-reports/dvdfiles/NZ/1979-11-28-NZ.pdf ''Aircraft Accident Report No 79-139 Air New Zealand McDonnell-Douglas DC10-30 ZK-NZP Ross Island Antarctica 28 November 1979''– the official accident report ("The Chippendale Report")
(audio file) ABC Radio National program "Ockham's Razor": "Arthur Marcell takes us through some of the events leading up to the crash and has a few questions for modern navigators."



Erebus disaster (NZHistory.net.nz)
–includes previously unpublished images and sound files
Erebus Aircraft Accident
Christchurch City Libraries Christchurch City Libraries is a network of 21 libraries and a mobile book bus. operated by the Christchurch City Council and Following the 2011 Christchurch earthquake the previous Christchurch Central Library building was demolished, and ...

Erebus for Kids–This site is for young school children to provide information about the Erebus Tragedy.
*
Erebus Disaster: Lookout
– official TV New Zealand YouTube site with programme on the Royal Commission enquiry into the crash.
Erebus Memorial: Erebus Memorial Names
– official New Zealand Ministry for Culture & Heritage memorial site.
BBC News: The plane crash that changed New Zealand
{{Portal bar, Aviation, New Zealand 1979 in Antarctica 1979 in New Zealand Airliner accidents and incidents involving controlled flight into terrain Aviation accidents and incidents in 1979 Accidents and incidents involving the McDonnell Douglas DC-10 Air New Zealand accidents and incidents Aviation accidents and incidents in Antarctica Aviation accidents and incidents in New Zealand Ross Island 1979 disasters in New Zealand November 1979 in Oceania History of the Ross Dependency *