Is AD 2021-13-05 a recurring Airworthiness Directive?

No — AD 2021-13-05 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 2021-13-05

Q: Which aircraft does AD 2021-13-05 apply to?

AD 2021-13-05 applies to Airbus Helicopters Deutschland Gmbh — models EC135P1, EC135P2, EC135P2+, EC135P3, EC135T1, EC135T2, EC135T2+, EC135T3. Serial/part conditions may narrow it to specific aircraft.

one-time

Official AD 2021-13-05 · FR doc 2021-14343 · 2021-07-07 · airframe

Airworthiness Directives; Airbus Helicopters Deutschland GmbH Helicopters

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for Airbus Helicopters Deutschland GmbH (Airbus Helicopters) Model EC135P1, EC135P2, EC135P2+, EC135P3, EC135T1, EC135T2, EC135T2+, and EC135T3 helicopters. This AD requires modifying the tail rotor (T/R) control installation, a functional test, and corrective actions as necessary. This AD was prompted by cases of insufficient clearance between a certain T/R control bearing connection and the helicopter structure, which were detected on the production line. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2021-13-05 applies to

MakesAirbus Helicopters Deutschland Gmbh

ModelsEC135P1, EC135P2, EC135P2+, EC135P3, EC135T1, EC135T2, EC135T2+, EC135T3, EC135

Serial-conditional — narrows to serials ?–1254.

Applies to helicopters with serial number up to and including 1254, except S/N 1235.

Whether AD 2021-13-05 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 2021-13-05 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.