R66 Service Bulletins
| NUMBER | SUBJECT | DATE |
|---|---|---|
| R66 SB-01 | D333-13 Fitting Lubrication | 26 APR 2011 |
| R66 SB-02 | Placards and Markings | 27 OCT 2011 |
| R66 SB-03 | Hydraulic Servos | 21 FEB 2012 |
| R66 SB-04 | Oil Cooling Fan Inlet Clearance | 29 MAY 2012 |
| R66 SB-05B Supersedes R66 SB-05, R66 SB-05A, & R66 SL-03A |
Clutch Retaining Bolt | 21 DEC 2012 |