AD 2022-12-08 Prompted By Reports Of Intermittent Or Abnormal Operation Of The Engine RPM Governor

The FAA is adopting a new airworthiness directive (AD) for certain Robinson Helicopter Company Model R22 BETA, R44, and R44 II helicopters.

This AD was prompted by reports of intermittent or abnormal operation of the engine revolutions per minute (RPM) governor (governor). This AD requires inspecting the engine RPM sensor wiring and installing a wiring kit. The FAA is issuing this AD to address the unsafe condition on these products. This AD is effective June 29, 2022.

Supplementary Information: The FAA is adopting a new AD for certain serial-numbered Robinson Helicopter Company Model R22 BETA, R44, and R44 II helicopters. This AD was prompted by reports of intermittent or abnormal operation of the governor. In normal conditions, a properly functioning governor maintains engine speed within acceptable limits. Intermittent or abnormal operation of the governor may result in engine overspeed or underspeed conditions during flight. If the engine governor malfunctions, the pilot may assume manual throttle control by firmly gripping the throttle and overriding the governor's friction clutch, or by switching the governor off. In the event of low rotor RPM, an alarm sounds. This condition, if not addressed, could result in reduced control of the helicopter and subsequent emergency landing or loss of control of the helicopter. The FAA is issuing this AD to address the unsafe condition on these products.

FMI: www.regulations.gov