What was found
(CAN) WHEN LANDING GEAR RETRACTION SELECTED LT MLG DID NOT LOCK UP, DOORS DID NOT CLOSE. UNCONFIRMED THAT THE DOORS INDICATED CLOSED, ALSO UNCONFIRMED THAT THE NOSE GEAR DOOR DID NOT CLOSE. SUBSEQUENT TEST FLIGHTS INDICATED DIFFERENT SCENARIOS WITH NLG SOMETIMES UNLOCKED SOMETIMES ALL OKAY. MLG WAS CONSISTENT IN THAT IT NEVER SHOWED LOCKED. RT MLG BEHAVED NORMALLY. UNABLE TO REPRODUCE THE FAULT ON THE GROUND/ON JACKS. THE RETRACTION ACTUATOR BRACKET WAS BROKEN CREATING THE PROBLEM. BRACKET REPLACED. AIRCRAFT RETURNED TO SERVICE.