Airworthiness Directive 54-24-01
one-timeAirworthiness Directives; Service Bulletin No. 98 dated October 29, 1954, covers this same subject and outlines the details for the installation.) FOOTER: S
Which aircraft AD 54-24-01 applies to
Applies to Bell Model 47B, 47B3, 47D, 47D1, 47E, and 47G helicopters; Service Bulletin No. 98 dated October 29, 1954 covers the same subject and installation details (subject truncated in source text).
Whether AD 54-24-01 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.
How AD compliance is recorded
A valid compliance record (14 CFR 43.9) states:
Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.
Look up a tail number →Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.