Rotors Flight Control — Collective Controls / Protective Cover — Modification
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of Group 1 helicopters with affected parts must modify the protective cover and re-identify collective sticks within 3 months of the effective date if the "SHEAR" control is associated with a hoist installation, or within 12 months otherwise. Installation of the old protective cover and collective sticks is prohibited from the effective date. Group 2 helicopters must also avoid installing the old parts from the effective date.
Summary
EASA Airworthiness Directive 2018-0106 is issued for Airbus Helicopters EC 225 LP models to address a safety issue with the protective cover of the "SHEAR" control pushbutton on pilot and copilot collective sticks. The directive mandates modification of the protective cover to an improved design to prevent mechanical deformation that could lead to unintended shearing of the hoist cable. This AD applies to all serial numbers of the EC 225 LP helicopter.
What changed
This new Airworthiness Directive introduces a mandatory modification requiring replacement of the protective cover on the "SHEAR" control pushbutton and re-identification of the pilot and copilot collective sticks with new part numbers. It prohibits installation of the old design protective cover and collective sticks to prevent recurrence of the unsafe condition. The modification is detailed in Airbus Helicopters Alert Service Bulletin EC225-67A017.
Why it matters
This AD is critical for aviation professionals because the mechanical deformation of the protective cover could cause unintended activation of the hoist cable shearing function, risking loss of hoisted loads or personnel. Operators and maintenance organizations must ensure compliance to maintain aircraft airworthiness and safety. Failure to comply could result in unsafe flight operations and regulatory non-compliance.
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