What was found
AFTER TAKEOFF R MAIN GEAR DID NOT FULLY RETRACT AND NOSE GEAR DOOR DID NOT CLOSE CAUSING VIBRATIONS. DURING GEAR UP WE HAD NORMAL INDICATION ON NOSE AND LEFT MAIN AND RIGHT MAIN HAD YELLOW HATCHED INDICATION. RECEIVED 4 YELLOW CAS MESSAGES "GEAR DISAGREE" "NOSE DOOR" R MAIN GEAR DOOR" "GEAR SYS FAIL". AFTER 4 MINS GEAR RETRACTED AND ALL DOORS CLOSED NORMALLY ON ITS OWN. REMAINED 180KTS OR LESS DURING ENTIRE FLIGHT AND NO OVERWEIGHT LANDING. FOR LANDING, GEAR CAME DOWN NORMALLY WITH NO ISSUES. CORRECTIVE ACTION: REMOVED FAILED BCU PN:42-965-4 SN:940A. INSTALLED CUSTOMER SUPPLIED BCU (REPAIRED) PN:42-965-4 SN:553A WITH NO DEFECTS NOTED. REMOVED SUSPECTED DEFECTIVE LGECU P/N 8-879-05 S/N E812 AND INSTALLED TESTED CUSTOMER SUPPLIED LGECU P/N 8-879-05 S/N E597. OPERATIONAL CHECKS AND GEAR SWINGS COMPLETED WITH NO DEFECTS/FAULTS FOUND. WORK PERFORMED IAW GL-6000 AMM 32-43-01-04, 32-43-00, 70-10-00, 32-31-09.