EASA AD 2021-0139R1
Doors — Cabin Lateral Sliding Plug Door Emergency Jettisoning System — Inspection / Modification
Summary
EASA Airworthiness Directive 2021-0139R1 is an updated regulatory requirement addressing the inspection and modification of the cabin lateral sliding plug door emergency jettisoning system on Airbus Helicopters AS 332 C, C1, L, and L1 models. It mandates repetitive inspections and eventual modification of the door release system to prevent jamming during emergency jettisoning. The directive applies to helicopters equipped with specific modifications and service bulletins related to the door mechanism.
What Changed
This revision extends the compliance time for the modification of the lateral sliding plug door release system and incorporates references to the latest Airbus Helicopters service information, including updated installation instructions. It also acknowledges the development of a prerequisite modification (mod 0729230) for certain helicopter configurations to enable embodiment of previous modifications. The directive supersedes earlier versions and retains acceptable alternative modification methods.
Why It Matters
This directive is critical for ensuring the emergency jettisoning mechanism of cabin doors functions reliably, which is vital for occupant evacuation in emergencies. Operators and maintenance organizations must comply to avoid potential door jamming that could obstruct evacuation. The updated compliance times and improved instructions help facilitate safer and more effective maintenance and modification processes.
What To Do
Operators must perform repetitive inspections of the affected door jettisoning mechanisms during scheduled maintenance or within 110 flight hours after 22 February 2017, and correct any discrepancies before further flight. They must complete the required modification of the door release system within 1,325 flight hours or 40 months after 25 June 2021, whichever occurs first. Compliance with specified Airbus Helicopters Alert Service Bulletins and Service Bulletins is mandatory, and alternative approved modification methods are acceptable.
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