R66 Service Bulletins

NumberSubjectDate
R66 SB 21Oil Tank Outlet Modificatioin24 FEB 2017
R66 SB-20
Supersedes R66 SB-14
Tail Rotor Drive Shaft Bearings07 NOV 2016
R66 SB-19Revised Instrument Markings07 NOV 2016
R66 SB-18A
Supersedes R66 SB-18
MRGB Output Yoke Retaining Plug14 JUN 2016
R66 SB-17A
Supersedes R66 SB-17
F642-1 Shaft Replacement07 NOV 2016
R66 SB-16“LOT 20” F642-1 Shaft Corrosion15 DEC 2015
R66 SB-15G500H Wire Chafe15 DEC 2015
R66 SB-14
Superseded by R66 SB-20
Tail Rotor Drive Shaft Forward Bearing25 JUN 2015
R66 SB-13Main Rotor Blade Modification
Ref. Main Rotor Blade Modification Tutorial Video
Ref. MSDSs and Technical Data Sheets
30 MAR 2015
R66 SB-12Landing Gear Attach Nuts08 DEC 2014
R66 SB-11Tail Gearbox Sight Gage08 DEC 2014
R66 SB-10Hanger Bearing Assembly21 NOV 2013
R66 SB-09Rotor RPM Sender Magnets03 JUL 2013
R66 SB-08Hydraulic Solenoid Diode03 JUL 2013
R66 SB-07Throttle Control Routing03 JUL 2013
R66 SB-06Fuel Switch Packing03 JUL 2013
R66 SB-05B
Supersedes R66 SB-05, R66 SB-05A, and R66 SL-03A
Clutch Retaining Bolt21 DEC 2012
R66 SB-04Oil Cooling Fan Inlet Clearance29 MAY 2012
R66 SB-03Hydraulic Servos21 FEB 2012
R66 SB-02Placards and Markings27 OCT 2011
R66 SB-01D333-13 Fitting Lubrication26 APR 2011