054 POSSIBLE OVERHEAT SENSOR BRACKET DISCREPANCY. SERVICE LETTER RECOMMENDED 14-MAY-2012 MOS 51 737-SL-26-055 WING(BODY OVERHEAT FAULTS DUE TO FENWAL CONNECTORS. SERVICE LETTER RECOMMENDED I9-JUN-2012 MOS 51 737-SL-26-056 APU FIRE DETECTOR PART MARK INCORRECT. SERVICE LETTER RECOMMENDED 23-MAY-20I3 MO