AD 2014-09-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Agusta S.p.A. | Various | Airworthiness Directives; AgustaWestland S.p.A. (Type Certificate Previously Held by Agusta S.p.A.) (Agusta) Helicopters |
Unsafe Condition
A crack in the tail rotor blade retaining bolt (part number 109-8131-09-1), which could result in failure of the bolt, release of a tail rotor blade, and subsequent loss of control of the helicopter.
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Required Actions
Visually inspect each bolt for a crack, damage, corrosion, a nick, or missing cadmium plating in the central part of the bolt. Replace the bolt with an airworthy one if any of these conditions are found. If no crack is detected during the initial visual inspection, perform a liquid penetrant inspection as specified.
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Compliance Time
Before exceeding 500 hours time-in-service (TIS) for bolts with less than 400 hours TIS, or before accumulating an additional 100 hours TIS or 2 months for bolts with 400 or more hours TIS, whichever occurs first.
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Affected Aircraft
AgustaWestland S.p.A. (Type Certificate Previously Held by Agusta S.p.A.) Model A109C, A109E, A109K2, and A119 helicopters with tail rotor blade retaining bolt, part number 109-8131-09-1, installed.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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