AD Amdt-39-9547
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron | Various | Airworthiness Directives; AlliedSignal, Inc. LTS101 Series Turboshaft Engines Installed on Eurocopter France Model AS-350D and SA- 366G1 Helicopters |
Unsafe Condition
PT disk failures after No. 3 bearing failures could lead to uncontained engine failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Incorporate design modifications to the power turbine (PT) rotor to prevent PT disk failures.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
AlliedSignal, Inc. LTS101 series turboshaft engines installed on Eurocopter France Model AS-350D and SA-366G1 helicopters.
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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