Flight Controls — Wiring Harness — Modification
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of MBB-BK117 D-2 helicopters with affected parts must replace these parts within 9 months from the effective date of 31 August 2019, following the Airbus Helicopters Alert Service Bulletin instructions. Installation of affected parts is prohibited on all helicopters from the effective date. Compliance must be documented and alternative methods of compliance may be approved if substantiated.
Summary
EASA Airworthiness Directive 2019-0198 is an airworthiness directive addressing wiring harness modifications for Airbus Helicopters Deutschland GmbH MBB-BK117 D-2 helicopters. It targets specific wire harness trim connector backshells with part number M85049/90-13W02 manufactured by AMPHENOL or of unknown manufacturer. The directive aims to prevent potential short circuits in yaw and pitch trim actuators that could lead to loss of helicopter control.
What changed
This new airworthiness directive requires replacing affected wire harness trim connector backshells with serviceable parts and prohibits the installation of affected parts on any helicopter. It introduces mandatory modification instructions based on Airbus Helicopters Alert Service Bulletin MBB-BK117 D-2-88A-002 to address the identified wiring insulation damage.
Why it matters
The directive is critical for aviation professionals because the affected wiring harness parts can cause short circuits leading to yaw or pitch trim runaway, which poses a serious safety risk including potential loss of helicopter control. Operators, maintenance organizations, and compliance teams must ensure timely replacement and prevent installation of faulty parts to maintain airworthiness and regulatory compliance.
More for Airbus Helicopters MBB-BK 117
All 63- EASA PAD 26-121Equipment / Furnishings – System Interface Unit – ReplacementOct 8, 2026
- EASA AD 2026-0188Instruments – Warning Unit Emergency Off Switches – Operational CheckSep 30, 2026
- EASA PAD 26-111Landing Gear – Emergency Flotation System Adhesive Label – RemovalSep 22, 2026
- EASA AD 2026-0152Air Conditioning – Vapor Cycle Air Conditioning System – InspectionJul 30, 2026
- EASA AD 2026-0151Main Rotor Drive – Rotor Hub-Shaft – InspectionJul 30, 2026
Get the next one by email
New ADs and bulletins for Airbus Helicopters MBB-BK 117 and Helicopters MBB-BK117 D-2, summarized like this page, every Monday.