AD 2023-03-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | Helicopters Model AS355E | Airworthiness Directives; Airbus Helicopters |
| aircraft | Aviat | Various | Airworthiness Directives; Airbus Helicopters |
Unsafe Condition
A partially broken right-hand side tail rotor drive fan support and a completely broken left-hand side fan support could result in loss of main gearbox and engine oil cooling function, loss of tail rotor drive, 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
Repetitively inspect certain part-numbered fan supports for cracks or broken legs. Remove and replace any affected part with a serviceable part if a crack or broken leg is found. Replace affected parts with serviceable parts unless already accomplished. Prohibit installing affected parts on any helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the compliance times specified in the AD.
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Affected Aircraft
Airbus Helicopters Model AS355E, AS355F, AS355F1, AS355F2, and AS355N helicopters, all serial numbers, 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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