What was found
(CAN) DURING APPROACH FOR LDG, CREW SELECTED GEAR DOWN&GOT 2 MAIN GEAR RED IND.S, THEN 2 MAIN GEAR GREEN IND.S WITH NO NOSEGEAR IND.. CREW BROKE OFF APPROACH & CYCLED GEAR COUPLE OF TIMES WITH NO IMPROVEMENT.AS SOON AS EMERG EXTENSION PERFORMED, GEAR CAME DOWN NORMALLY,&NORMAL LDG MADE. INVEST. REVEALED THAT SLIGHT WEAR IN DIAMETER OF BOLT, P/N AN3-13 INST IN UPLOCK HOOK ASSY P/N 27-52004-017, (TOR QUE TUBE) ALLOWED SEVERAL DEGS ANGULAR PLAY BETWEEN HOOK ASSY&ACTUATION ARM ASSY P/N 27-52000-015. PLAY PREVENTED SUFFICIENT RETRACTION OF NOSEGEAR UPLOCK HOOK TO ALLOW NOSEGEAR TO RELEASE. MANUAL EXTENSION SYSTEM BYPASSED ASSY. BOLT REPLA