What was found
DURING DESCENT FROM 35, 000 FT, RECEIVED A NOTICEABLE SHUDDER IN THE AIRFRAME. SUBSIDED ONCE BELOW 250KTS. GEAR AND FLAPS WERE UP AND SPEEDBRAKE WAS RETRACTED. INSPECTION FOUND LT GEAR DOOR HINGE HAS A CRACK ON THE L/E. REMOVED, FIT AND INSTALLED NEW HINGE HALF PN 6622024-19 ON LT MAIN GEAR DOOR IAW DWG 6622024. FOUND MLG DOOR LOWER ROD BEARING FROZEN. ACCOMPLISHED REPLACEMENT OF MLG DOOR LOWER ROD BEARING, PN M81835/1-5K AND ATTACH BOLT, PN NAS6305-19D. REPLACED NUT PN MS17826-5 FROM BULK STOCK. ACCOMPLISHED INSTALLATION OF MLG DOOR. ALL WORK DONE IAW MM 32-10-00. VERIFIED GEAR DOOR CLEARANCE CHECK.