Is AD 2021-13128 a recurring Airworthiness Directive?

No — AD 2021-13128 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2021-13128 apply to?

AD 2021-13128 applies to Airbus Helicopters Deutschland — models MBB-BK 117 D-2, MBB-BK 117. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2021-13128

one-time

AD 2021-13128 · 2021-06-24 · airframe

Airworthiness Directives; Airbus Helicopters Deutschland GmbH (AHD) Helicopters

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Deutschland GmbH (AHD) Model MBB-BK 117 D-2 helicopters. This AD was prompted by reports of chafing marks on the wiring harness behind the middle side panels in the area of the front passenger (PAX) panels. This AD requires inspecting, modifying, and rerouting the wiring harness, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2021-13128 applies to

MakesAirbus Helicopters Deutschland

ModelsMBB-BK 117 D-2, MBB-BK 117

Whether AD 2021-13128 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 2021-13128 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.