What was found
(CAN) ROLLER BEARING WITH NLG DOORS FULLY CLOSED SHOULD FALL WITHIN ITS MECHANICAL CAM-LOCK WHEN FUNCTIONING NORMALLY. WHEN HYDS ARE REMOVED, RETRACT ACTUATOR WILL RELAX AND CAM-LOCKED ROLLER BEARING WILL KEEP NLG DOOR FULLY CLOSED, PREVENTING FROM FALLING 'OPEN'. IF PIVOT BOLT BECOMES CORRODED AND RESTRICTS MOVEMENT OF ITS SPRING-LOADED PIVOT LEVER. ROLLER BEARING CAN HANG-UP AND NOT FALL INTO ITS CAM-LOCK SLOT. WHEN HYDRAULICS ARE REMOVED AND DOOR RETRACT ACTUATOR RELAXES, DOORS WILL DROP OPEN.