AD 2021-17-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Leonardo S.p.a Helicopters |
Unsafe Condition
un-commanded activation of the rotor brake system before take-off due to a jammed rotor brake control cable and subsequent partially open brake control valve.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
repetitive inspections of the rotor brake control cable and replacement of the rotor brake control cable, if necessary, as specified in EASA AD 2021-0067.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 hours and thereafter at intervals not to exceed 100 hours.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Leonardo S.p.a. Model A109A, A109A II, A109C, A109E, A109K2, A109S, and AW109SP helicopters with a certain rotor brake kit 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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