AD 2021-21-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Hélicoptères | Guimbal | Airworthiness Directives; Hélicoptères Guimbal Helicopters |
Unsafe Condition
Failure of the cooling fan due to a crack in the fan external ring or on the cooling fan front flange, which could result in engine in-flight shut-down and reduced control of the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Removing certain part-numbered cooling fans from service, or modifying certain part-numbered cooling fans before exceeding a certain total hours time-in-service (TIS), and installing newly designed cooling fans.
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Compliance Time
Within the effective date of this AD.
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Affected Aircraft
Hélicoptères Guimbal (HG) Model Cabri G2 helicopters with a cooling fan part number P/N G52-00-000; or P/N G52-00-001 or P/N G52-04-100, if it is or has previously been mounted on a 12-hole engine pulley P/N G52-10-100 or P/N G52-10-101, installed.
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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