AD 2015-11-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Agusta | S.p.A. | Airworthiness Directives; Agusta S.p.A. Helicopters |
Unsafe Condition
A crack in the tail rotor (T/R) drive shaft flanged adapter, which could result in failure of the T/R drive shaft and reduced control of the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the tail rotor (T/R) drive shaft flanged adapter (part numbers 412-040-622-101 and 412-040-623-101) for cracks. Remove the adapter from service if a crack is found. Visually inspect the adapter before installation.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight if a crack is found.
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Affected Aircraft
Agusta S.p.A. Model AB412 helicopters with serial numbers 25801 through 25900, and Model AB412 EP helicopters with serial numbers 25901 and larger.
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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