EASA AD 26-031 — Instruments — Fuse Cover Attachment of Circuit Breaker Panel — Modification
Summary
EASA Airworthiness Directive 26-031 is a proposed directive addressing a modification to the fuse cover attachment on the circuit breaker panel of Airbus Helicopters AS 350 B2, AS 350 B3, and EC 130 B4 models. The directive targets specific fuse covers with part numbers 350A76-2395-20, 350A76-2395-21, and 350A76-2395-23 that are part of certain control units. It aims to enhance safety by preventing interference with the pilot pedal controls.
What Changed
This new directive proposes a mandatory modification to reinforce the attachment of the fuse cover on the circuit breaker panel to prevent partial detachment. It introduces a compliance requirement to modify affected parts within 330 flight hours or 6 months, whichever occurs first, and prohibits the installation of affected parts after modification. The directive is based on Airbus Helicopters Alert Service Bulletins ASB AS350-31-10-0002 and ASB EC130-31-10-0001.
Why It Matters
This directive is critical for aviation professionals because the partial detachment of the fuse cover can interfere with the pilot's left pedal, potentially reducing yaw control of the helicopter. Operators and maintenance teams must address this unsafe condition promptly to ensure continued safe flight operations and regulatory compliance. Failure to comply could lead to control issues and increased safety risks during helicopter operation.
What To Do
Operators of Airbus Helicopters AS 350 B2, AS 350 B3, and EC 130 B4 models must modify the installation of the affected fuse cover parts within 330 flight hours or 6 months after the directive's effective date. After modification, the installation of any affected fuse cover parts is prohibited. Compliance should be performed following the instructions in the applicable Airbus Helicopters Alert Service Bulletins.