AD 2020-11-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | Helicopters Model EC120B | Airworthiness Directives; Airbus Helicopters |
Unsafe Condition
recurring loss of tightening torque on several attachment bolts of the tail rotor hub body, which could lead to cracking and potential loss of the tail rotor drive and consequent loss of yaw control of the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
repetitive inspections of the tail rotor hub body for cracks and applicable corrective actions if necessary, and repetitive replacement of the attachment bolts, washers, and nuts of the tail rotor hub body.
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Compliance Time
within 15 hours time-in-service (TIS) or 7 days, whichever occurs first.
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Affected Aircraft
all Airbus Helicopters Model EC120B helicopters.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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