AD Amdt-39-10228
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Robinson | Helicopter Company Model R22 | Airworthiness Directives; Robinson Helicopter Company Model R22 Helicopters |
| aircraft | Aviat | Various | Airworthiness Directives; Robinson Helicopter Company Model R22 Helicopters |
| engine | Lycoming | 0-360-J2A | Airworthiness Directives; Robinson Helicopter Company Model R22 Helicopters |
Unsafe Condition
Inadvertent placement of the mixture control to the idle cutoff position during in-flight leaning of the engine could result in an engine shutdown and subsequent loss of control of the helicopter.
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Required Actions
Replace the MA-4-5 carburetor and carburetor air temperature (CAT) gage with an MA-4SPA carburetor and remarked CAT gage per specified service bulletin and kit instructions. Revise the Rotorcraft Flight Manual by inserting FAA-approved supplements to remove references to engine leaning.
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Compliance Time
Within 50 hours time-in-service after the effective date of this AD
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Affected Aircraft
Robinson Helicopter Company Model R22 helicopters, serial numbers 2571 through 2664 with a Lycoming 0-360-J2A engine installation.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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