Service Letter SL-S| Name | Revision | Lang | Subject | Date |
|---|
| SLAS550-30-05 | 2 | en | Alert | 12/17/1985 |
| SLS550-01-02 | | en | AIRCRAFT GENERAL - CORRECTION TO INSTALLED EQUIPMENT LIST | 10/21/1988 |
| SLS550-05-01 | | en | | 07/08/1988 |
| SLS550-11-01 | | en | Placards and Markings ~ Data Plate Relocation | 03/01/1988 |
| SLS550-12-01 | | en | SERVICING - SPECIAL LUBRICANT USED ON TRIM TAB ACTUATORS | 04/08/1988 |
| SLS550-21-01 | | en | | 07/19/1991 |
| SLS550-23-02 | | en | COMMUNICATIONS - STATIC DISCHARGE WICK MODIFICATION | 06/16/1989 |
| SLS550-23-04 | | en | COMMUNICATIONS - HIGH FREQUENCY RADIO TELEPHONE CHANNEL FREQUENCY CHANGES | 09/11/1991 |
| SLS550-23-08 | | en | COMMUNICATIONS - SUNDSTRAND COCKPIT VOICE RECORDER | 12/01/1992 |
| SLS550-25-01 | 2 | en | Passenger Seat Hydrolok Control Servicing/Replacement | 09/12/1986 |
| SLS550-27-01 | | en | | 02/06/1987 |
| SLS550-27-05 | | en | FLIGHT CONTROLS - FLAP/ELEVATOR TRIM MIXER ACTUATOR ASSEMBLY INSPECTION/REPLACEMENT | 10/18/1991 |
| SLS550-32-11 | | en | LANDING GEAR - UPLOCK ACTUATOR HYDRAULIC LINE INSPECTION | 02/24/1989 |
| SLS550-32-32 | | en | LANDING GEAR - CLEVELAND SERVICE BULLETIN ESB7026 | 12/01/1992 |
| SLS550-32-38 | | en | LANDING GEAR - MAIN LANDING GEAR ACTUATOR (TEIJIN SEIKI) PORT IDENTIFICATION | 12/01/1992 |
| SLS550-32-52 | 1 | en | LANDING GEAR - NOSE LANDING GEAR ICE PROTECTION BOOT INSTALLATION | 07/28/2005 |
| SLS550-34-03 | | en | Transmittal of Sundstrand Data Control, Inc. Service Informational Letter GIL-No. GPWC-0476-34-1 | 09/02/1988 |
| SLS550-34-06 | | en | NAVIGATION - DORNE AND MARGOLIN DMN4-17-4 NAV ANTENNA COUPLER INSPECTION | 05/11/1990 |
