R22 - Robinson R44
READING ACTUAL RPM Power On Maximum Minimum* 104% 101%** 530 515 Power Off Maximum Minimum 110% 90% 561 459 *Transient operation at lower RPM permitted for emergency procedures training. **97% (495 RPM) permitted on R22s with O-320 engine and tachometer with 97% to 104% green arc installed. POWERPLANT LIMITATIONS ENGINE One Lycoming Model O-320 ...