What was found
AFTER TAKEOFF LANDING GEAR WOULD NOT RETRACT PAST INTERLOCK; SWITCHED TO SYSTEM NR 2, SAME PROBLEM. ENT BY: 502223 RPT BY: 123564 FACT 11JAN04 PERFORMED LANDING GEAR SAFETY RELAY CONTROL SIMULATOR TEST SET ON LANDING GEAR SWITCH UNIT (2GA) PER M/M 32-00-00-5, ALL INDICATIONS NORMAL. REMOVED AND REPLACED PROX DET UNIT (54GB) PER M/M 32-31-71-4 BITE CHECK C/O ALL INDICATIONS NORMAL. SERVICED RT PITCH DAMPER TO CORRECT PRESS PER M/M 12-12-32-0. REMOVED RT MAIN GEAR BOGIE BEAM PROXIMITY DETECTOR BOLT FOUND IT TO BE PACKED WITH ICE, CLEANED AND DRIED AREA RECHECKED TARGET GAPS INSTALLED PER M/M 32-00-00-4, ALL CHECKS NORMAL.