AD 2011-17-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Agusta | S.p.A. Model A109A, A109A II, A109C, and A109K2 | Airworthiness Directives; Agusta S.p.A. Model A109A, A109A II, A109C, and A109K2 Helicopters |
Unsafe Condition
A crack in a fixing bolt, failure of a fixing bolt, and subsequent loss of control of the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 5 hours time-in-service (TIS), inspect the main rotor scissor fitting assembly to determine if there are two washers installed under the head of each fixing bolt. If 2 washers are not installed, within 25 hours TIS after making that determination, replace all 3 fixing bolts and install 2 washers under the head of each fixing bolt.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 5 hours TIS for inspection, and within 25 hours TIS for replacement if washers are not installed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Agusta S.p.A. Model A109A, A109A II, A109C, and A109K2 helicopters.
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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