Is AD 2016-23-05 a recurring Airworthiness Directive?

No — AD 2016-23-05 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 2016-23-05

Q: Which aircraft does AD 2016-23-05 apply to?

AD 2016-23-05 applies to Airbus Helicopters — models SA-365N1, AS-365N2, AS 365 N3, SA-366G1, EC 155B, EC155B1, SA-365, AS-365. Serial/part conditions may narrow it to specific aircraft.

one-time

Official AD 2016-23-05 · FR doc 2016-27638 · 2016-11-25 · airframe

Airworthiness Directives; Airbus Helicopters (Previously Eurocopter France) Helicopters

What this AD requires

We are superseding Airworthiness Directive (AD) 2007-25-08 for Eurocopter France (now Airbus Helicopters) Model SA-365N1, AS-365N2, AS 365 N3, SA-366G1, EC 155B, and EC155B1 helicopters. AD 2007-25-08 required checking the tail rotor gearbox (TGB) oil, inspecting the magnetic plug, and either replacing the TGB or performing additional inspections. This AD was prompted by reports of new occurrences of loss of yaw control due to failure of the control rod bearing. This AD requires checking the TGB oil level and replacing the bearing with a new part-numbered bearing. These actions are intended to detect and prevent damage to the bearing resulting in end play, loss of tail rotor pitch control, and subsequent loss of control of the helicopter.

Which aircraft AD 2016-23-05 applies to

MakesAirbus Helicopters

ModelsSA-365N1, AS-365N2, AS 365 N3, SA-366G1, EC 155B, EC155B1, SA-365, AS-365, SA-366, EC155

Part-conditional — 704A33-651-093, 704A33-651-104.

Applies to helicopters with a tail rotor gearbox (TGB) pitch control rod assembly double bearing, P/N 704A33-651-093 or P/N 704A33-651-104, installed.

Whether AD 2016-23-05 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 2016-23-05 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.