What was found
LEFT T-HANDLE ILLUMINATED WHILE TAXIING TO GATE. LEFT -T- HANDLE ILLUMINATED WHILE TAXIING TO THE GATE AFTER LANDING ACTIVATED LEFT FIRE BOTTLE BUT IT FAILED TO DISCHARGE WITH -T- HANDLE PULLED. -T- HANDLE ON LT SIDE ILLUMINATED BECAUSE FIRE LOOP WAS TOUCHING THE EXHAUST STACK. REPOSITIONED FIRE LOOP, PERFORMED LT FIRE EXTINGUISHER ACTIVATION CHECK IAW COLGAN W/C 26-20-01, OPS CHECK GOOD. REMOVED & REPLACED LT FIRE BOTTLE IAW SAAB WORK CARD 26-20-05 P/N ON & OFF 30100023, S/N ON 28764A1, S/N OFF 25307A1.