AD 2014-12-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Agusta | S.p.A. | Airworthiness Directives; Agusta S.p.A. Helicopters |
Unsafe Condition
A crack in the rotor brake pinion could result in failure of the pinion, detachment of parts inside the transmission causing a malfunction or jamming, and subsequent loss of control of the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 100 hours time-in-service, magnetic particle inspect each rotor brake pinion for a crack. If there is a crack, before further flight, replace the rotor brake pinion.
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Compliance Time
Within 100 hours time-in-service
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Affected Aircraft
Agusta S.p.A. Model AB412 and AB412EP helicopters with a rotor brake pinion, part number 412-040-301-101, installed.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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