Main Rotor Drive – Main Gearbox – Replacement; Placards and Markings – ENG1 Training Idle Switch – Installation /; Operational Restriction
Superseded. Comply with 2023-0148, which replaces this document.
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must determine flight hours accumulated on affected parts within 10 flight hours of the directive's effective date and replace affected main gearboxes before exceeding 1,000 flight hours or within 10 flight hours if already near the limit. Placards prohibiting use of the ENG1 Training Idle switch must be installed within 10 flight hours, and operational restrictions on training flights must be followed. Results of flight hour determinations must be reported to Airbus Helicopters within 30 days.
Summary
EASA Airworthiness Directive 2019-0152-E is an emergency directive addressing Airbus Helicopters EC 225 LP models equipped with certain main gearboxes (MGB) identified by specific part numbers. The directive mandates inspection and replacement of affected MGBs and installation of operational restrictions related to the ENG1 Training Idle switch. It aims to prevent reduced power transfer capacity in one-engine inoperative scenarios due to detected wear and damage in the main gearbox components.
What changed
This directive introduces mandatory repetitive replacement of affected main gearboxes and installation of placards prohibiting the use of the ENG1 Training Idle switch during training flights. It also sets conditions for installing replacement gearboxes and operational restrictions to mitigate the risk of reduced helicopter control. The directive is an interim measure pending further actions.
Why it matters
Compliance with EASA Airworthiness Directive 2019-0152-E is critical for operators and maintenance organizations to ensure the continued airworthiness and safe operation of EC 225 LP helicopters. The directive addresses a potential failure mode that could compromise engine power transfer and helicopter control during one-engine inoperative conditions. Adhering to the directive helps prevent in-flight incidents and ensures regulatory compliance.
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- EASA AD 2023-0148R1Main Rotor Drive – Main Gearbox – Replacement; Placards and Markings – ENG1 Training Idle Switch – Installation / Operational RestrictionJul 24, 2026
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