PREVENTING CONTAMINATION THAT AFFECTS FLAMMABILITY Of INSULATION BLANKETS. SERVICE LETTER INFORMATIONAL MOS 23-MAR-1998 SL 737-SL-25-078 REV. A RESCU 406 EMERGENCY LOCATOR TRANSMITTER (ELT) INSTALLATION. SERVICE LETTER MOS 03-JUN-2008 - (s) SL 737-SL-25-079 GALLEY OVEN MODIFICATION. SERVICE