AD 2021-03-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | Helicopters Model SA-365N | Airworthiness Directives; Airbus Helicopters |
| aircraft | Aviat | Various | Airworthiness Directives; Airbus Helicopters |
Unsafe Condition
metal particles causing seizure of the main gearbox, loss of power to the main rotor, and subsequent loss of control of the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replacing the existing magnetic plug with an improved non-electrical magnetic plug, as specified in EASA AD 2018-0176.
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Compliance Time
Within 50 flight hours
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Affected Aircraft
Airbus Helicopters Model SA-365N, SA-365N1, AS-365N2, AS 365 N3, EC 155B, and EC155B1 helicopters, certificated in any category, equipped with magnetic plugs, part number (P/N) 1B7807 or P/N 704A34543017 (electrical), or P/N 365A32-1711-00 (non-electrical), as applicable, installed in the main gearbox (MGB) pump intake.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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