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Airworthiness Directive 2025-24-03

recurring
Official AD 2025-24-03 · FR doc 2025-20482 · 2025-11-20 · airframe

Airworthiness Directives; Airbus Helicopters

What this AD requires

The FAA is superseding Airworthiness Directive (AD) 2019-19- 13, which applied to certain Airbus Helicopters Model EC225LP helicopters. AD 2019-19-13 required determining the total hours time- in-service (TIS) of the free wheel shafts of certain main rotor gearboxes (MGBs), replacing the MGB or right-hand side (RH) free wheel shaft, installing placard(s), and revising the rotorcraft flight manual (RFM) for the helicopter. Since the FAA issued AD 2019-19-13, an additional part-numbered MGB has been identified to have the same unsafe condition and the FAA determined that additional changes are necessary. This AD requires the actions of AD 2019-19-13 and expands the applicability by adding the additional part-numbered MGB, changes the requirement to determine the total hours TIS of a certain free wheel shaft, requires repetitive replacement of the MGB or the RH free wheel shaft, changes the requirements for who can replace parts, and expands the parts installation limitation conditions. The FAA is issuing this AD to address the unsafe condition on these products.

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

Which aircraft AD 2025-24-03 applies to

MakesAirbus Helicopters
ModelsEC225LP, EC225
Part-conditional — 332A32-5001-XX, 332A32-5002-XX, 332A32-5003-XX, 332A322191.20, 332A32-5011-XX, 332A32-5012-XX, 332A32-5013-XX, 332A32-5004-XX.

Applies only to helicopters with main rotor gearbox (MGB) P/N 332A32-5001-XX, 332A32-5002-XX, or 332A32-5003-XX with a main reduction gear module (main module), with MOD 07-53016 (16-roller free wheel of free wheel shaft P/N 332A322191.20) installed, P/N 332A32-5011-XX, 332A32-5012-XX, or 332A32-5013-XX; or with an MGB P/N 332A32-5004-XX with a main module P/N 332A32-5400-00. 'XX' denotes any dash number.

Whether AD 2025-24-03 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 2025-24-03 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.