What was found
LEFT MLG INDICATOR LIGHT DID NOT ILLUMINATE WHEN GEAR WAS PUT DOWN. ROTARY TEST: LIGHT OUT, UNLOCK LIGHT EXTINGUISHED. WITH FLAPS DOWN, THROTTLES IDLE, SPEED BELOW 150KTS: NO HORN. GEAR BLOWN WITH EMERGENCY SYSTEM USING CHECKLIST PROCEDURES. RELAMPED LT MLG INDICATOR LIGHT WITH NEW BULB. IAW MM 33-10-00. OPS CHECKED, NO DEFECTS NOTED. JACKED ACFT & RESET AUXILIARY GEAR EXTENSION SYS. ACCOMPLISHED SEVERAL GEAR SWINGS WITH NO DEFECTS NOTED. IAW MM 32-01-00. RESERVICED GEAR/BRAKE BOTTLE IAW MM 12-13-00.