AD Amdt-39-18046
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Agusta | S.p.A. (Agusta) | Airworthiness Directives; Agusta S.p.A. (Agusta) Helicopters |
Unsafe Condition
Fatigue cracks in the fuselage frame 5700 middle section could lead to structural failure and subsequent loss of control of the helicopter.
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Required Actions
Inspect the fuselage frame 5700 middle section for a crack within 10 hours time-in-service (TIS) or upon accumulating 100 hours TIS since new, whichever occurs later. Repeat the inspection at intervals not exceeding 100 hours TIS. If a crack is found, repair it before further flight using FAA-approved procedures.
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Compliance Time
Within 10 hours TIS or upon accumulating 100 hours TIS since new, whichever occurs later.
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Affected Aircraft
Agusta Model AB139 and AW139 helicopters, excluding those with structural reinforcement modifications installed in accordance with Agusta Bollettino Tecnico No. 139-089.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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