AD 2015-11-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Agusta | S.p.A. (Agusta) | Airworthiness Directives; Agusta S.p.A. (Agusta) Helicopters |
Unsafe Condition
Loosening of the tail rotor (T/R) duplex bearing locking nut, potentially leading to failure of the T/R 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
Inspect the lock wires securing the T/R locking nut to determine if any are missing or damaged. Install a second lock wire if only one is present. Remove and reassemble the housing and slider group of the T/R rotating controls if one or both lock wires are damaged. Perform a daily pilot check of each lock wire securing the T/R locking nut.
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Compliance Time
Within 24 hours for the daily pilot check.
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Affected Aircraft
Agusta Model A109C, A109S, A109K2, A109E, and AW109SP helicopters, all serial-numbered.
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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