AD 2013-09-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Agusta | S.p.A. | Airworthiness Directives; Agusta S.p.A. Helicopters |
Unsafe Condition
A rotary variable differential transformer (RVDT) locking pin could move out of position, resulting in loss of manual throttle control of the engine and subsequent loss of control of the helicopter.
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Required Actions
Inspect the pilot and co-pilot RVDT control box assemblies for proper locking pin position at intervals not exceeding 50 hours time-in-service. Replace the RVDT control box if the locking pin is recessed or extended by more than 2.0 millimeters or is missing. Modify both the pilot and co-pilot RVDT control box assemblies within 8 months of the effective date.
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Compliance Time
Within 5 hours time-in-service for initial inspection, then at intervals not exceeding 50 hours time-in-service for subsequent inspections. Modifications must be completed within 8 months of the effective date.
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Affected Aircraft
Agusta Model A119 and AW119 MKII helicopters with pilot control box assembly, part number 109-0010-81-103, and co-pilot control box, part number 109-0010-81-107, installed.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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