Is AD 2015-13845 a recurring Airworthiness Directive?

No — AD 2015-13845 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2015-13845 apply to?

AD 2015-13845 applies to Agusta — models A109C, A109S, A109K2, A109E, AW109SP, A109, AW109. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2015-13845

one-time

AD 2015-13845 · 2015-06-09 · airframe

Airworthiness Directives; Agusta S.p.A. (Agusta) Helicopters

What this AD requires

We are superseding airworthiness directive (AD) 2014-02-08 for Agusta Model A109C, A109S, A109K2, A109E, and AW109SP helicopters. AD 2014-02-08 required inspecting the lock wires securing the tail rotor (T/R) duplex bearing locking nut (locking nut) to determine whether any lock wires are missing or damaged. This AD retains some of the requirements of AD 2014-02-08 but removes the terminating action, expands the applicability, and adds a daily pilot check. This AD was prompted by reports of loosening T/R locking nuts. These actions are intended to prevent failure of the T/R and subsequent loss of control of the helicopter.

Which aircraft AD 2015-13845 applies to

MakesAgusta

ModelsA109C, A109S, A109K2, A109E, AW109SP, A109, AW109

Condition concerns a missing or broken lock wire securing the tail rotor duplex bearing locking nut; no specific part number given in applicability text. Supersedes AD 2014-02-08.

Whether AD 2015-13845 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.

Supersession

Supersedes AD 2014-02-08.

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 2015-13845 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.