AD 2018-01-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | Helicopters Model AS350B3 | Airworthiness Directives; Airbus Helicopters |
Unsafe Condition
An unsafe condition exists and is likely to exist or develop on other helicopters of the same type design due to the risk of takeoff without hydraulic pressure in the tail rotor (T/R) hydraulic system, loss of T/R flight control, 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 350 hours time-in-service, install a timer relay for the yaw servo hydraulic switch, install an additional light on the caution and warning panel, and replace the bistable ACCU TST button with a monostable button. For helicopters with a P122 or P132 electrical console installed, replace the bistable ACCU TEST switch with a monostable toggle switch P/N MS24658-16F.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 350 hours time-in-service
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Airbus Helicopters Model AS350B3 helicopters with a dual hydraulic system installed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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