What was found
NO2 ENG OVHT. FOLLOWED QRH. SHUT ENG DOWN CREW DEBRIEF OVERHEAT WAS HIGH NACELLE TEMP. LIGHT. REMOVED AND REPLACED AFT RIGHT ENGINE FIRE DETECTOR ASSEMBLY PER AMM TASK 26-11-01-000-802. OPS CHECKS NORMAL. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1085427 SN OFF 1792 DETECTOR, FIRE, OFF 29-2611-9-0004 1792 ON 29-2611-9-0004 5562 DETECTOR, FIRE, OFF 29-2611-9-0003 1813 ON 29-2611-9-0003 4887 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1306612 SN OFF 1813 AMM26-11-01/401. REPLACED #2 ENG. LOWER CORE FIRE DETECTOR LOOP IAW REMOVED REPLACED LOWER FAN CASE FIRE DETECTION LOOP P/N902016-01 . FIRE TEST PASSES. REF AMM 26-11-01/401 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1013916 SN OFF 1447 DETECTOR, FIRE, OFF 29-2611-9-0002 1447 ON 29-2611-9-0002 6426 DETECTOR, FIRE, OFF 29-2611-9-0001 1871 ON 29-2611-9-0001 2014 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1160242 SN OFF 1871 OPERATIONAL TEST AMM 26-11-01-400-802, 26-11-00-710-801. REMOVED AND REPLACED UPPER FAN FIRE LOOP AND PERFORMED RAN ENGINE FOR 5 MINUTES WITH BLEED ON AND PACKS LIGHT REMAINED EXTINGUISHED. PERFORMED BITE ON BOX NO FAULTS REF. AMM 26-11-00-710-801, 71-00-00-800-803-F00.