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Title 14 CFR part 45, subpart B, Identification of Aircraft and Related Products, requires identification of certain replacement and modification parts produced for installation on TC products. The following are the only articles the manufacturer is required to permanently mark.
Current Part Number, Modification Status, Airline Part Numbers, etc. Rewriteable
25 sty 2024 · A flight level (FL) is a standard pressure altitude, expressed as three numbers. Aircraft flying on flight levels all measure their altitude from the same pressure setting, 1013.2 Hpa (or 29.92 InHg).
Flight levels are used to ensure safe vertical separation between aircraft, despite natural local variations in atmospheric air pressure. Historically, altitude has been measured using a pressure altimeter, which is essentially a calibrated barometer.
Using unique identification numbers, serial numbers, ...
The IPC is intended for use in identifying parts, and in illustrating assembly relationships while the AMM should be used for the removal and installation of parts of the aircraft. Many manufacturers offer this information digitally in an electronic parts catalogue (EPC).
A Flight Level (FL) is the vertical distance of an aircraft above the ISOBARIC SURFACE of 1013.25hPa (hecto Pascal) or 29.92 in Hg (inches of Mercury). An ISOBARIC SURFACE is the invisible landscape that connects all points with the same atmospheric pressure.
