ARINC 424 or ARINC 424 Navigation System Data Base Standard is an international standard

file format A file format is a Computer standard, standard way that information is encoded for storage in a computer file. It specifies how bits are used to encode information in a digital storage medium. File formats may be either proprietary format, pr ...

for aircraft navigation data maintained by

Airlines Electronic Engineering Committee An airline is a company that provides air transport services for traveling passengers or freight (cargo). Airlines use aircraft to supply these services and may form partnerships or alliances with other airlines for codeshare agreements, in wh ...

and published by Aeronautical Radio, Inc. The ARINC 424 specifications are not a

database In computing, a database is an organized collection of data or a type of data store based on the use of a database management system (DBMS), the software that interacts with end users, applications, and the database itself to capture and a ...

, but a "standard for the preparation and transmission of data for assembly of airborne navigation system data bases". ARINC 424 specifies a 132-

byte The byte is a unit of digital information that most commonly consists of eight bits. Historically, the byte was the number of bits used to encode a single character of text in a computer and for this reason it is the smallest addressable un ...

fixed-length record format. Each record consists of one piece of navigation information such as an

airport An airport is an aerodrome with extended facilities, mostly for commercial Aviation, air transport. They usually consist of a landing area, which comprises an aerially accessible open space including at least one operationally active surf ...

heliport A heliport is a small airport which has a helipad, suitable for use by helicopters, powered lift, and various types of vertical lift aircraft. Designated heliports typically contain one or more touchdown and liftoff areas and may also hav ...

runway In aviation, a runway is an elongated, rectangular surface designed for the landing and takeoff of an aircraft. Runways may be a human-made surface (often asphalt concrete, asphalt, concrete, or a mixture of both) or a natural surface (sod, ...

waypoint A waypoint is a point or place on a route or line of travel, a stopping point, an intermediate point, or point at which course is changed, the first use of the term tracing to 1880. In modern terms, it most often refers to coordinates which spe ...

navaid A navigational aid (NAVAID), also known as aid to navigation (ATON), is any sort of signal, markers or guidance equipment which aids the traveler in navigation, usually nautical or aviation travel. Common types of such aids include lighthouses, ...

airway The respiratory tract is the subdivision of the respiratory system involved with the process of conducting air to the alveoli for the purposes of gas exchange in mammals. The respiratory tract is lined with respiratory epithelium as respiratory ...

s, arrival routes, and departure routes. Since its initial publication in May 1975 ARINC 424 has been amended many times, introducing new record types and field values and revised coding rules as required by new technologies and classes of equipment such as

GPS The Global Positioning System (GPS) is a satellite-based hyperbolic navigation system owned by the United States Space Force and operated by Mission Delta 31. It is one of the global navigation satellite systems (GNSS) that provide geol ...

and Flight Management Computers. Each amendment is issued as a supplement, a format number suffix indicating the revision level of the standard. Supplement 22 was issued in July 2018, but the FAA currently publishes data in the older ARINC 424-18 format.Coded Instrument Flight Procedures (CIFP), formerly the National Flight Database (NFD)
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References

External links

Airlines Electronic Engineering Committee

Evolution of Airborne Navigation Databases

Introduction to ARINC 424Coded Instrument Flight Procedures (CIFP), formerly the National Flight Database (NFD)
from the

Federal Aviation Administration The Federal Aviation Administration (FAA) is a Federal government of the United States, U.S. federal government agency within the United States Department of Transportation, U.S. Department of Transportation that regulates civil aviation in t ...

ARINC standards {{compu-storage-stub