Aircraft On Ground or AOG is a term in

aviation Aviation includes the activities surrounding mechanical flight and the aircraft industry. ''Aircraft'' include fixed-wing and rotary-wing types, morphable wings, wing-less lifting bodies, as well as lighter-than-air aircraft such as h ...

maintenance indicating that a problem is serious enough to prevent an

aircraft An aircraft ( aircraft) is a vehicle that is able to flight, fly by gaining support from the Atmosphere of Earth, air. It counters the force of gravity by using either Buoyancy, static lift or the Lift (force), dynamic lift of an airfoil, or, i ...

from flying. This can involve problems as simple as a light bulb being out, or as complex as a damaged engine.

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estimates that a 1-2 hour AOG situation will cost an airline from $10,000 to $20,000 and possibly even as high as $150,000 per hour depending on the type of aircraft and route flown.

Causes of AOG incidents

AOG incidents can arise from various factors, including: * Mechanical failures: Unexpected mechanical issues or failures during flight or pre-flight checks can ground an aircraft. * Maintenance delays: Scheduled maintenance that extends beyond the expected timeframe can result in AOG status. * Supply chain issues: Delays in obtaining necessary parts or components can hinder timely repairs, leading to extended grounding periods * Regulatory compliance: Aircraft may be grounded due to non-compliance with safety regulations or certification requirements. * AOG can also refer to an aircraft waiting for a flight crew at a different airport, where flight crew are not available. Crew scheduling can designate an inbound deadheading crew, to operate this flight, as "AOG" which makes this crew the highest priority to get seats on the flight. Passengers, even in first class can be "bumped" to accommodate the AOG crew. personal experience airline Captain

References

Air freight Aircraft maintenance {{aviation-stub