AD 2005-09-51
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Turbomeca | Arrius 2F | Airworthiness Directives; Turbomeca Arrius 2F Turboshaft Engines |
Unsafe Condition
Failure of a high pressure turbine (HPT) blade and damage to two other HPT blades, caused by a ferrule starting a disturbance that reduced the cooling effect of the secondary air system, leading to an in-flight engine shutdown (IFSD).
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Before further flight, replace the Module 2 on certain engines listed by serial number (SN) in the AD.
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
Turbomeca Arrius 2F turboshaft engines listed by serial number (SN) in Table 1 of the AD, installed on, but not limited to, Eurocopter EC 120B 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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