What was found
UPON GEAR RETRACTION, LT MAIN & NOSE GEAR RETRACTED NORMALLY. RT MAIN SHOWED IN TRANSIT & UNSAFE INDICATION WITH A LOUD THUMPING SOUND COMING FROM FUSELAGE BEHIND THE COCKPIT. SIMILAR WRITE UP ON LOG PAGE 4013565. R & R RT UPLOCK OX IAW AMM 32-33-10. OPERATIONS & LEAK CHECKED GOOD. SEE ITEMS 1 + 2, LOG PAGE 4013569 FOR FOLLOWING CHECKS.