What was found
NOSE GEAR EMERGENCY EXTENSION SPRING UNABLE TO EXTEND NOSE GEAR AND LOCK IN-FLIGHT. AFTER LANDING AND ROLL-OUT ON MAINS HOLDING NOSE OFF, NOSE GEAR LOCKED AT 30 KNOTS AIRSPEED. NEW PART WAS 2 INCHES LONGER THAN OLD PART. SUBMITTER RECOMMENDED TIME-LIFE CYCLE REPLACEMENT SCHEDULE.