isposition MOC SL 737-SL-34-145 FLIGHT MANAGEMENT COMPUTER UPDATE 10.2A. SERVICE LETTER RECOMMENDED 18-DEC-1998 MOS - Is) 51 737-SL-34-146 GABLES VHF NAV CONTROL PANEL UPGRADE. SERVICE LETTER RECOMMENDED 30-APR-1999 MOS - (s) 51 737-SL-34-147 ROCKWELL COLLINS WEATHER RADAR TRANSCEIVER UPGRADE. S