What was found
(CAN) AN AIRCRAFT EXPERIENCED A NR 2 ENGINE FIRE WARNING IN FLT. CREW SHUT ENGINE DOWN AND FIRE WARNING CEASED. FIRE BOTTLES NOT DISCHARGED. A/C LANDED ON NR 1 ENGINE SATISFACTORILY. A/C NOT DIVERTED FROM ORIGINAL DESTINATION. FULL EMERGENCY DECLARED.INITIAL INSPECTION REVEALS NO FUEL, OIL OR AIR LEAKS AND THERE IS NO PHYSICAL DAMAGE APPARENT. PEC LOOP REMOVED. BOTH ITEMS HAVE A P/N 10-1096-01 WHICH IAW IPC 26-11-03-01 ITEM 30, IS POST SB 84-26-03. A/C HAS COMPLETED ENGINE RUNS WITH BLEED AIR BOTH OFF AND ON, AFTER PEC LOOP REPLACEMENT. ALL IS OPERATING CORRECTLY. AIRCRAFT HAS BEEN SIGNED UP AS SERVICEABLEAND IS BACK INTO SERVICE.