Is AD 2024-07-51 a recurring Airworthiness Directive?

Yes — AD 2024-07-51 requires a repetitive inspection every 25 hours. Next-due depends on the aircraft's time in service.

Which aircraft does AD 2024-07-51 apply to?

AD 2024-07-51 applies to Bell Textron Canada Limited — models 429. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2024-07-51

recurring

Official AD 2024-07-51 · FR doc 2024-11420 · 2024-05-24 · airframe

Airworthiness Directives; Bell Textron Canada Limited Helicopters

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for certain Bell Textron Canada Limited Model 429 helicopters. The FAA previously sent this AD as an emergency AD to all known U.S. owners and operators of these helicopters. This AD was prompted by multiple reports of tail rotor (T/R) blade abrasion strip cracks. This AD requires repetitively inspecting and checking the T/R blade abrasion strip on certain T/R blades and, depending on results, replacing or marking the T/R blade. This AD also prohibits installing affected T/R blades on any helicopter. The FAA is issuing this AD to address the unsafe condition on these products.

Repetitive inspection. Re-inspect every 25 hours. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 2024-07-51 applies to

MakesBell Textron Canada Limited

Models429

Serial-conditional — narrows to serials 57001–?.

Part-conditional — 429-016-101-105.

Applies to helicopters serial number 57001 and subsequent, only if a tail rotor blade, P/N 429-016-101-105, with a serial number identified in Table 1 of Bell Alert Service Bulletin 429-24-63, dated March 21, 2024, is installed.

Whether AD 2024-07-51 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:

Method of compliance — The specific action taken (inspected, replaced, modified) and to what revision.

Date — When the work was done.

Aircraft time — Total time in service / tach at compliance — how recurring next-due is computed.

Signature & certificate — The A&P/IA who returned it to service, with certificate number.

Is AD 2024-07-51 complied with on your aircraft?

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 →Read the full directive (Federal Register)

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.