Is AD 2019-10-51 a recurring Airworthiness Directive?

No — AD 2019-10-51 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2019-10-51 apply to?

AD 2019-10-51 applies to Airbus Helicopters Deutschland Gmbh — models MBB-BK 117 C-2, MBB-BK 117. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2019-10-51

one-time

Official AD 2019-10-51 · FR doc 2019-18708 · 2019-09-04 · airframe

Airworthiness Directives; Airbus Helicopters Deutschland GmbH Helicopters

What this AD requires

The FAA is publishing a new airworthiness directive (AD) for all Airbus Helicopters Deutschland GmbH Helicopters (Airbus) Model MBB- BK 117 C-2 helicopters. Emergency AD 2019-10-51 was sent previously to all known U.S. owners and operators of these helicopters. This AD requires, for certain helicopters, inspecting the fuselage frame and providing certain information to the FAA. This AD also prohibits installing certain components as part of Supplemental Type Certificate (STC) SR00592DE on any helicopter. This AD was prompted by reports of fatigue cracks in the fuselage frame. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2019-10-51 applies to

MakesAirbus Helicopters Deutschland Gmbh

ModelsMBB-BK 117 C-2, MBB-BK 117

Whether AD 2019-10-51 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 2019-10-51 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.