14 CFR Part 25 — Airworthiness Standards: Transport Category Airplanes
Section 01: Organizations & Authorities
Definition
The FAA airworthiness standard containing the detailed type design requirements for transport category airplanes — typically jet-powered commercial aircraft with more than 19 passenger seats or a maximum certificated takeoff weight above 19,000 pounds. Part 25 prescribes structural, performance, flight characteristics, design and construction, powerplant, equipment, and electrical systems requirements. It is one of the most comprehensive airworthiness codes in the world.
Where This Shows Up
Part 25 is highly harmonized with EASA CS-25 and TCCA AWM Chapter 525 through decades of bilateral coordination. However, individual requirements may differ in detail, leading to the need for special conditions or additional requirements during validation projects.
Primary Sources
FAA airworthiness standards for transport category airplanes.
Across Jurisdictions
CS-25
EASA's equivalent airworthiness code for large aeroplanes, largely harmonized with Part 25.
Airworthiness Manual Chapter 525
TCCA's equivalent airworthiness standard, closely aligned with FAA Part 25.
Related Terms
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