Is AD 2015-17-01 a recurring Airworthiness Directive?

Yes — AD 2015-17-01 requires a repetitive inspection every 165 hours. Next-due depends on the aircraft's time in service.

Airworthiness Directive 2015-17-01

Q: Which aircraft does AD 2015-17-01 apply to?

AD 2015-17-01 applies to Airbus Helicopters — models AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350C, AS350D, AS350D1. Serial/part conditions may narrow it to specific aircraft.

recurring

Official AD 2015-17-01 · FR doc 2015-20510 · 2015-08-20 · airframe

Airworthiness Directives; Airbus Helicopters (Previously Eurocopter France) (Airbus Helicopters) Helicopters

What this AD requires

We are superseding Airworthiness Directive (AD) 2013-21-01 for Eurocopter France Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350C, AS350D, AS350D1, AS355E, AS355F, AS355F1, AS355F2, AS355N, and AS355NP helicopters. AD 2013-21-01 required certain inspections of each tail rotor pitch horn assembly (pitch horn) for a crack, replacing a cracked pitch horn before further flight, and a one-time visual inspection of pitch horns above certain hours time-in-service (TIS). This new AD retains the requirements of AD 2013-21-01 but requires a repetitive visual inspection for all pitch horns regardless of hours TIS. This AD was prompted by a report of a crack in the yoke of a pitch horn and is intended to detect a crack in the pitch horn to prevent failure of the pitch horn, loss of the anti-torque function, and subsequent loss of control of the helicopter.

Repetitive inspection. Re-inspect every 165 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 2015-17-01 applies to

MakesAirbus Helicopters

ModelsAS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350C, AS350D, AS350D1, AS355E, AS355F, AS355F1, AS355F2, AS355N, AS355NP, AS350, AS355

Part-conditional — 350A121368.01, 350A121368.02, 350A121368.03, 350A121368.04.

Applies only when a tail rotor hub pitch horn assembly, P/N 350A121368.01, .02, .03, or .04 (or a pitch horn marked with P/N 350A121368.XX), is installed. Supersedes AD 2013-21-01.

Whether AD 2015-17-01 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:

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 2015-17-01 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.