AD 2005-25-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Turbomeca | Arriel 2B and 2B1 | Airworthiness Directives; Turbomeca Arriel 2B and 2B1 Turboshaft Engines |
Unsafe Condition
Reports of several free turbine shields found with large circumferential cracks, which could cause a loss of engine alignment during maneuvering loads and lead to in-flight engine shutdown.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 10 operating hours after the effective date, visually check the free turbine shield for cracks using specified procedures. Replace the shield or establish a repetitive check interval based on crack condition.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 10 operating hours after the effective date
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Turbomeca Arriel 2B and 2B1 turboshaft engines without modification TU22 incorporated, installed on, but not limited to, Eurocopter France AS350B3 and EC130B4 helicopters.
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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.