AD 2010-12-51
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Agusta | S.p.A. (Agusta) Model A119 and AW119 MKII | Airworthiness Directives; Agusta S.p.A. (Agusta) Model A119 and AW119 MKII Helicopters |
Unsafe Condition
Missing rod bushing in the tail rotor gearbox (TGB) could result in abnormal vibration and damage to the tail rotor system, loss of the yaw control function, and subsequent loss of control of the helicopter.
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Required Actions
Remove the forward boot from the hub-locking nut and insert a 0.3 mm thickness gauge, not exceeding 10 mm in width, between the tail rotor control rod and nut until the gauge stops. Measure the depth the gauge is inserted between the rod and nut. If the depth is between 4 mm and 6 mm, reidentify the TGB by changing the last three digits of the part number (P/N) from -103 to -105. If the depth is greater than 6 mm, replace the TGB and associated parts with airworthy parts.
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Compliance Time
Before further flight
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Affected Aircraft
Agusta S.p.A. Model A119 and AW119 MKII helicopters with the affected tail rotor gearbox (TGB) 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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