Airworthiness directives › 2022-12-08
AD 2022-12-08 Airworthiness Directives; Robinson Helicopter Company Helicopters
Makes named: robinson. Models named: R22 BETA, R44, R44 II. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to the Robinson Helicopter Company helicopters identified in paragraphs (c)(1) through (3) of this AD, certificated in any category. (1) Model R22 BETA helicopters, serial numbers (S/Ns) 4825 through 4857 inclusive, 4860, and 4861. (2) Model R44 helicopters, S/Ns 2625 through 2669 inclusive, 30061, 30071 through 30080 inclusive, 30083, and 30084. Note 1 to paragraph (c)(2): Helicopters with an R44 Cadet designation are Model R44 helicopters. (3) Model R44 II helicopters, S/Ns 14364, 14412 through 14512 inclusive, 14514 through 14517 inclusive, 14519 through 14521 inclusive, and 14525.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 15 hours time-in-service or 15 days after the effective date of this AD, whichever occurs first: (1) For Model R22 BETA helicopters, inspect the engine RPM sensor wiring and modify the wiring connection to the airframe harness by following paragraphs 1 through 31 of the Kit Instructions in Robinson R22-series Governor & Engine RPM Sensor Connector Upgrade Kit Instructions, KI-288 Revision A, dated February 23, 2022, except you are not required to discard parts. (2) For Model R44 and R44 II helicopters, inspect the engine RPM sensor wiring and modify the wiring connection to the airframe harness by following paragraphs 1 through 41 of the Kit Instructions in Robinson R44-series Governor & Engine RPM Sensor Connector Upgrade Kit Instructions, KI-287 Revision A, dated February 23, 2022, except you are not required to discard parts.
Unsafe condition
This AD was prompted by reports of intermittent or abnormal operation of the engine revolutions per minute (RPM) governor (governor). The FAA is issuing this AD to prevent failure of the governor. The unsafe condition, if not addressed, could result in engine overspeed or underspeed conditions during flight, loss of engine thrust control, increased pilot workload, reduced control of the helicopter, and subsequent emergency landing or loss of control of the helicopter.
Affected ADs
None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1