What was found
ENGINE 1 OVERHEAT LIGHT ON CLIMBOUT. SWITCH WAS IN A POSITION W B LOOP ON MEL. REPLCD. ENG AND APU FIRE CONT. PANEL REF AMM26-00-01-400-801, AND ACP APU FIRE DET OPS TEST REF AMM26-15-00-710-801, ENG FIRE DET. OPS TEST REF AMM26-11-00-710-801, FIRE AND OVHT DET SYS OPS TEST REF AMM26-10-00-710-801, APU FIRE SWITCH SHUTDOWN TEST REF AMM26-22-00-720-801, AND WHEEL WELL, WING AND AFT BODY OVHT DET SYS. OPS TEST REF AMM 26-18-00-710-801. ALL TESTS PASSED. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1821849 SN OFF 8516 MODULE, FIRE DE OFF 29-3111-9-0013 8516 ON 29-3111-9-0013 8681 REPLACED ENG AND APU FIRE DET. MODULE REF AMM26-10-01-400-801, AND ACP ENG FIRE DET. OPS TEST REF AMM26-11-00-710-801 AND APU FIRE DET. OPS TEST REF AMM 26-15-00-710-801. ALL TESTS PASSED. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1405668 SN OFF 2970 PANEL, CONTROL, OFF 29-2615-9-0001 2970 ON 29-2615-9-0001 7760 REPLACED #1 ENG PRSOV AND TESTED SUCCESSFULLY REF AMM 36-11-04-400-801.PARTS USED: 29-3612-9-0004,QTY :1 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1312913 SN OFF 3606 VALVE, SHUTOFF, OFF 29-3612-9-0004 3606 ON 29-3612-9-0004 5552