Wiring Harness — Cabin Wiring Harness — Inspection
- Published
- Effective
- Deadline
- Replaces
- 2019-0305
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must inspect the affected wiring harnesses within 110 flight hours or 3 months from 27 December 2019, following Airbus Helicopters Alert Service Bulletin instructions. If damage or routing discrepancies are found, repairs and clearance checks must be completed before the next flight. Installation of the modification Service Bulletin removes the need for repetitive inspections, which must otherwise be performed every 400 flight hours.
Summary
EASA Airworthiness Directive 2019-0305R1 is an updated regulatory document addressing inspection requirements for the wiring harness behind the front passenger panels of Airbus Helicopters Deutschland GmbH MBB-BK117 D-2 helicopters. It mandates inspections and corrective actions to detect and resolve chafing and clearance issues in the cabin wiring harness to prevent potential in-flight hazards.
What changed
This revision of EASA AD 2019-0305 excludes helicopters that have embodied the modification Service Bulletin MBB-BK117 D-2-25-022 from applicability. It also clarifies that after this modification is installed, certain installation requirements and repetitive inspections are no longer necessary. The update incorporates the latest Airbus Helicopters Alert Service Bulletin revisions and the new modification instructions.
Why it matters
This directive is critical for aviation professionals to ensure the continued airworthiness and safety of MBB-BK117 D-2 helicopters by preventing wiring harness damage that could lead to in-flight emergencies such as hoist load loss or electrical fires. Operators and maintenance teams must comply to avoid operational disruptions and maintain regulatory compliance with EASA requirements.
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