Is AD 2013-21-05 a recurring Airworthiness Directive?

No — AD 2013-21-05 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 2013-21-05

Q: Which aircraft does AD 2013-21-05 apply to?

AD 2013-21-05 applies to Eurocopter Deutschland — models EC135P1, EC135P2, EC135P2+, EC135T1, EC135T2, EC135T2+, EC135. Serial/part conditions may narrow it to specific aircraft.

one-time

Official AD 2013-21-05 · FR doc 2013-25312 · 2013-10-31 · airframe

Airworthiness Directives; Eurocopter Deutschland GmbH Helicopters

What this AD requires

We are adopting a new airworthiness directive (AD) for Eurocopter Deutschland GmbH (Eurocopter) Model EC135 P1, P2, P2+, T1, T2, and T2+ helicopters. This AD requires inspecting each linear transducer bearing (bearing) for freedom of movement and replacing the bearing if there is binding or rough turning or if there is chafing or damage on the lower side of the floor. Also, this AD requires modifying and re-identifying a certain rod. This AD was prompted by an incident involving limited control of a tail rotor because of the binding of a bearing. The actions of this AD are intended to detect and replace each bearing subject to binding, which could lead to subsequent loss of control of the helicopter.

Which aircraft AD 2013-21-05 applies to

MakesEurocopter Deutschland

ModelsEC135P1, EC135P2, EC135P2+, EC135T1, EC135T2, EC135T2+, EC135

Part-conditional — LN9367GE6N2, L671M5040205, L671M5040101, L533M1014101, L533M1014102, L533M1014103, L533M1014104, L533M1014105.

Applies only to helicopters with bearing P/N LN9367GE6N2; rod P/N L671M5040205; lever P/N L671M5040101; and floor P/N L533M1014101, -102, -103, -104, -105, or -106 installed.

Whether AD 2013-21-05 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 2013-21-05 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.