AD Amdt-39-10313
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Eurocopter | France Model SA-365N, SA- 365N1, and SA-366G1 | Airworthiness Directives; Eurocopter France Model SA-365N, SA- 365N1, and SA-366G1 Helicopters |
Unsafe Condition
Cracks in the planetary gear shafts of main gearboxes not modified with MOD 077244 may lead to gear shaft failure, transmission failure, and loss of control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the main gearbox magnetic plug and oil filter for ferrous chips. Perform vibration measurements if necessary. Replace the main gearbox if specified quantities of ferrous chips are found or abnormal vibrations at a certain frequency are detected.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
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Affected Aircraft
Eurocopter France Model SA-365N, SA-365N1, and SA-366G1 helicopters not modified with MOD 077244.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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