AD 2021-04-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | Helicopters Model AS350B3 | Airworthiness Directives; Airbus Helicopters |
Unsafe Condition
Failure of the electrical operation of the throttle twist grip, which can prevent switching from ``IDLE'' mode to ``FLIGHT'' mode, resulting in unintended touchdown to the ground at a flight-idle power setting, damage to the helicopter, and injury to occupants.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Modifying the electrical system of the throttle twist grip, inspecting the routing of a microswitch electrical harness, and correcting the electrical harness routing if it is incorrect.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before the next practice autorotation, before the next simulated governor failure, or within 330 hours time-in service, whichever occurs first.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Airbus Helicopters Model AS350B3 helicopters with a Turbomeca ARRIEL 2B engine 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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