What was found
ON PUSHBACK PRIOR TO STARTING NR 2 ENG, ENG NR 2 LOOP-A LIGHT ILLUMINATED. FOLLOWED ABNORMAL PROCEDURE P2-8-11. FIRE DETECTOR LOOP LIGHT ILLUMINATED WITHOUT FIRE WARNING. SHUT DOWN APU, FIRED BOTH ENGINE 2 FIRE BOTTLES (AFTER FIREBELL AND LIGHT IN FUEL LEVER ILLUMINATED) NO EFFECT. ENGINE NR 2 LOOP-B FIRE DETECTOR SYSTEM OPS CHECKS NORMALLY. ENGINE NR 2 LOOP-A LIGHT DEFERRED PER MEL 26-1A, CTL NR 28626. CATEGORY C EXP DATE 26JAN98. REMOVED AND REPLACED BOTH FIREBOTTLES (ENG NR 2/APU) IAW 26-21-02, P11 AND SUBS.