AD 2000-20-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Agusta | S.p.A. Model A109K2 and A109E | Airworthiness Directives; Agusta S.p.A. Model A109K2 and A109E Helicopters |
Unsafe Condition
Fatigue cracks on the main transmission aft support fitting (aft support fitting) could result in excessive displacement of the main gearbox, failure of the engine to main gearbox drive shaft, loss of power to the main rotor, and a subsequent forced landing.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove each main transmission aft support fitting, P/N 109-0325-08-01, and replace it with an airworthy support fitting, P/N 109-0325-08-109. For fittings with less than 140 hours TIS, replace at or before 150 hours TIS. For fittings with 140 or more hours TIS, replace within 10 hours TIS. Also, revise the Airworthiness Limitations Section of the maintenance manual to establish a 150-hour TIS life limit for the affected fittings.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 10 hours TIS for fittings with 140 or more hours TIS; at or before 150 hours TIS for fittings with less than 140 hours TIS.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Agusta S.p.A. Model A109K2 helicopters with serial number up to and including 10036 and Model A109E helicopters with serial number up to and including 11069, excluding A109E helicopters with serial numbers 11049, 11055, 11056, or 11067, certificated in any category.
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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