What was found
NOSE LANDING GEAR WAS EXTENDED, BUT DID NOT LOCK IN THE DOWN POSITION. SUBSEQUENT INVESTIGATION REVEALED THAT THE NLG MAIN DRIVE ASSY WAS BROKEN. THE ANNUAL AND 100-HOUR INSPECTION WERE COMPLETED APRIL 19, 1996. TACHOMETER 766.3. TOTAL TIME: 3,900.8 HOURS. AIRCRAFT WAS PAINTED DECEMBER 22, 1995. THE INTERMEDIATE GEAR DRIVE TABLE ASSY WAS BENT. SUBMITTER STATED IMPROPER RIGGING MAY BE THE CAUSE.