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Airworthiness Directive 2026-06-04

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Official AD 2026-06-04 · FR doc 2026-05885 · 2026-03-26 · airframe

Airworthiness Directives; Airbus Helicopters Deutschland GmbH

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Deutschland GmbH Model MBB-BK 117 D-3 helicopters. This AD was prompted by a determination that certain bolts installed on the horizontal control rods of the flight controls were not dye penetrant inspected for cracks during manufacturing and thus could lead to bolt failure. This AD requires replacement of affected bolts with bolts that are eligible for installation. This AD also prohibits installing an affected bolt on any helicopter. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2026-06-04 applies to

MakesAirbus Helicopters Deutschland Gmbh
ModelsMBB-BK 117 D-3, MBB-BK 117

Whether AD 2026-06-04 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 2026-06-04 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.