AD 2021-02-20
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Hélicoptères | Guimbal | Airworthiness Directives; Hélicoptères Guimbal Helicopters |
Unsafe Condition
A crack in a rotating scissor fitting discovered during maintenance, suspected to be caused by corrosion under residual stress, which could result in failure of the rotating or non-rotating scissor fitting on either the main rotor hub or the swashplate guide, 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
Inspect each rotating and non-rotating scissor fitting with the bolts connecting the scissor fittings removed, remove the cotter pins and bolts, clean the outside surface of each scissor fitting, and visually inspect each scissor fitting for a crack. Repeat the inspection at intervals not to exceed 50 hours time-in-service or 6 months, whichever occurs first. If a crack is detected, replace the main rotor hub or swashplate guide, as applicable, before further flight. Prohibit installing an MRH or swashplate guide with an affected scissor fitting installed, even if new, unless the initial inspection has been accomplished.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 30 hours time-in-service or 30 calendar days, whichever occurs first, and thereafter at intervals not to exceed 50 hours time-in-service or 6 months, whichever occurs first.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Hélicoptères Guimbal Model Cabri G2 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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