AD 97-02-14
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Robinson Helicopter Company | R22 | Airworthiness Directives; Robinson Helicopter Company Model R22 Helicopters |
| aircraft | Robinson Helicopter Company | R22 ALPHA | Airworthiness Directives; Robinson Helicopter Company Model R22 Helicopters |
| aircraft | Robinson Helicopter Company | R22 BETA | Airworthiness Directives; Robinson Helicopter Company Model R22 Helicopters |
| aircraft | Robinson Helicopter Company | R22 MARINER | Airworthiness Directives; Robinson Helicopter Company Model R22 Helicopters |
Unsafe Condition
Pilot mismanagement of the main rotor (M/R) revolutions-per-minute (RPM) could result in unrecoverable M/R blade stall 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
Adjust the A569-1 or -5 low-RPM warning unit to activate at 96% to 97% rotor RPM. Install or upgrade the throttle governor with specified kits and revise the R22 Rotorcraft Flight Manual to include normal and emergency procedures and limitations on governor use.
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Compliance Time
within 30 days after the effective date of this AD, unless accomplished previously
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Affected Aircraft
Robinson Helicopter Company Model R22 helicopters, including R22 ALPHA, R22 BETA, R22 MARINER, certificated in any category.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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