Service Instruction No. 1500
Counterweight Roller Change for Robinson Helicopter
DATE: January 11, 2001
All O-540-F1B5 model engines installed in Robinson R-44 helicopters.
TIME OF COMPLIANCE
Textron Lycoming has revised the counterweight tuning to lessen vibration characteristics for the O-540- F1B5 model engine installed in those Robinson R-44 helicopter which use the new Robinson fanshaft P/N C007-5.
Get It Exchanged
Use our Engine Exchange Program to order a new, rebuilt, or overhauled engine to experience more airtime and less downtime.