AD 2022-02-20
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | Various | Airworthiness Directives; Airbus Helicopters Deutschland GmbH (AHD) Helicopters |
| aircraft | Bell | Various | Airworthiness Directives; Airbus Helicopters Deutschland GmbH (AHD) Helicopters |
| aircraft | Aviat | Various | Airworthiness Directives; Airbus Helicopters Deutschland GmbH (AHD) Helicopters |
Unsafe Condition
Incorrect installation of a collective bellcrank-K, which could lead to unwanted collective input, resulting in reduced control of the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspecting the collective bellcrank-K to determine if it is correctly installed and has a correct position marking, and, depending on the findings, applicable corrective actions, as specified in EASA AD 2021-0074. The corrective actions include inspecting for signs of chafing on the bearing block, the control lever, the forked lever, the sliding sleeve, and the bearing ring, replacing any parts that have signs of chafing, and installing a serviceable bellcrank-K with an applied position marking.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
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Affected Aircraft
All Airbus Helicopters Deutschland GmbH (AHD) Model MBB-BK 117 C-2 and MBB-BK 117 D-2 helicopters.
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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