What was found
NO DOWN AND LOCKED INDICATION OF NOSE LANDING GEAR (GREEN LIGHT) GEAR SAFE INDICATION OBTAINED AFTER BLOW DOWN BOTTLE WAS DISCHARGED. SUBMITTER STATES, APPARENT CAUSE IS DEFECT WAS DUPLICATED DURING MAINTENANCE OPS CHECK EXTENSIVE TROUBLESHOOTING REVEALED A DEFECTIVE NOSE LANDING GEAR DOWN AND LOCKED INDICATING LIGHT CAPSULE. CHANGED LANDING GEAR HANDLE MODULE, PERFORMED FULL LANDING GEAR SYSTEM OPS CHECK. AIRCRAFT RETURNED TO SERVICE. (M)