Aerospace glossary
Parts 23, 25, 27 and 29
The FAA airworthiness standards for the main aircraft types, with matching EASA specifications. New aircraft such as powered-lift often draw on several of them under special-class rules.
| FAA part | EASA equivalent | Covers |
|---|---|---|
| Part 23 | CS-23 | Normal category airplanes |
| Part 25 | CS-25 | Transport category airplanes (airliners) |
| Part 27 | CS-27 | Normal category rotorcraft |
| Part 29 | CS-29 | Transport category rotorcraft |
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