Power Plant – Engine Mount Bushings – Inspection / Replacement
Superseded. Comply with 2019-0275, which replaces this document.
- Published
- Effective
- Deadline
- Replaces
- 2015-0198
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of MBB-BK117 D-2 helicopters must conduct repetitive inspections of engine mount bushings every 50 flight hours until replacement. Any defective bushings found must be corrected before the next flight. All affected bushings must be replaced with serviceable parts within 12 months from 27 February 2019, the effective date of the AD. Installation of affected parts is prohibited after modification or from the effective date for helicopters without affected parts installed.
Summary
EASA Airworthiness Directive 2019-0030 is an airworthiness directive issued for Airbus Helicopters Deutschland GmbH MBB-BK117 D-2 helicopters. It addresses the inspection and replacement of engine mount bushings, specifically part number 105-60386, to prevent potential failure of engine mount front support pins. This directive mandates inspections and replacement with serviceable parts to ensure continued safe operation of affected helicopters.
What changed
EASA Airworthiness Directive 2019-0030 supersedes the previous AD 2015-0198 and introduces a requirement to replace affected engine mount bushings with improved serviceable parts within 12 months of the effective date. It retains the repetitive inspection requirements from the previous AD but prohibits the reinstallation of affected parts. The directive also establishes that modification with serviceable parts terminates the need for further repetitive inspections.
Why it matters
This directive is critical for aviation professionals as it addresses a safety risk involving delaminated engine mount bushings that could lead to engine mount failure and loss of helicopter control. Operators and maintenance organizations must comply to prevent potential accidents and ensure regulatory compliance. The directive impacts maintenance planning, parts inventory, and inspection schedules for affected MBB-BK117 D-2 helicopters.
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