What was found
CREW EXPERIENCED NR 2 ENGINE FIRE WARNING. SHUT DOWN ENGINE AND DISCHARGED NR 1 AND NR 2 FIRE EXTINGUISHERS. FIRE WARNING REMAINED ON. LANDED AIRCRAFT AT CPR, INVESTIGATED AND FOUND NO EVIDENCE OF FIRE, OVERHEAT, OR BLEED AIR LEAK. FURTHER INVESTIGATION FOUND CORRODED PYLON CANNON PLUG SHORTED, GIVING FALSE FIRE WARNING INDICATION. REPLACED CANNON PLUG. OPS CHECK NORMAL. RECOMMEND INSPECTION OF TB1 CANNON PLUG IN LT AND RT PYLONS FOR CORROSION. REPLACE IF NECESSARY.