SL-49-058 REV. E FALSE AUXILIARY POWER UNIT (APU) MAINTENANCE LIGHT RECOMMENDED 28-MAY-2009 ILLUMINATION. SERVICE LETTER MOS SI. 737-SL-49-059 START POWER UNIT (SPU) TRANSFORMER MOUNTING PLATE IMPROVEMENT ALLIED SIGNAL MODEL 131-98 RECOMMENDED AUXILIARY POWER UNIT (APU). SERVICE LETTER MOS 08-APR-1998 -

O TASK DESCRIPTION UNIT INTERVAL TIME SINCE ADJ TOTAL TIME COMPLIANCE NEXT DUE MAX TIME PART/SERIAL (ENH) AFH LIMIT REMAINING 49-41-71 START POWER UNIT 1151984-261 MOS TSN:0 177.97 08-OCT-1999 068C-0284 HRSAASC 0/C TSN:44 3753 44 REF: AFL TSN:38 922 38 49-61-12 APU ELECTRONIC CONTROL