AD 2024-17-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Leonardo S.p.a. Helicopters |
Unsafe Condition
Cracks found on tail rotor (TR) damper bracket assemblies due to stress corrosion, which could lead to fracture of the affected part, TR blade loss, unbalance or damage to the tail or other parts of the helicopter, possibly resulting in failure of the TR damper, and consequent loss of control of the helicopter.
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Required Actions
Accomplish repetitive detailed visual inspections (DVIs) of certain part-numbered TR damper bracket assemblies for corrosion and cracks and, depending on the results, take corrective action. Prohibit installing an affected TR damper bracket assembly unless it is new.
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Compliance Time
Within 50 flight hours
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Affected Aircraft
Leonardo S.p.a. Model AB139 and AW139 helicopters, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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