AD 2014-07-51
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | AgustaWestland | S.p.A. | Airworthiness Directives; AgustaWestland S.p.A. Helicopters |
Unsafe Condition
Reports of certain bearings dislodging from Main Rotor (M/R) Rotating Scissors, potentially leading to loss of control of the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Repetitively inspect the M/R Rotating Scissors for bearing play every 5 hours time-in-service (TIS). If play exceeds allowable limits, remove the bearing and re-identify the M/R Rotating Scissors before further flight. Remove all affected bearings within 50 hours TIS.
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Compliance Time
Within 5 hours TIS for initial inspection, and thereafter at intervals not exceeding 5 hours TIS. Remove affected bearings within 50 hours TIS.
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Affected Aircraft
AgustaWestland S.p.A. Model AB139 and AW139 helicopters with certain serial numbered M/R Rotating Scissors, P/N 3G6230A00733, or those repaired with installation of certain bearings, P/N 3G6230V00654.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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