What was found
AFTER TAKE OFF, RT MAIN GEAR WOULD NOT RETRACT. CONFIRMED BOTH ON PRIMARY AND SECONDARY INDICATIONS NO PROBLEMS OR UNSAFE INDICATIONS WITH GEAR DOWN AND LOCKED. AIRSPEED NEVER EXCEEDED 220 KIAS INSPECTED RT MLG, FOUND RT MLG DOOR LATCH ASSY BROKEN OFF DOOR CASTING. REMOVED AND REPLACED RT MLG DOOR IAW AMM 32-14-01-2 UP TO ITEM "7B". TRIMMED MLG DOOR FOR CLEARANCE REF MM32-14-01. ADJUSTED RT MLG DOOR CYLINDER PER MM 32-14-01-2 UP TO AND INCLUDING STEP 8(L). INSTALLED RIGHT MAIN GEAR DOOR LATCH ROLLER LINK AND ADJUSTED PER MM 32-34-03-2. CONTINUED ON WITH GEAR/DOOR RETRACTION CHECK PER MM 32-14-01-2 UP TO AND INCLUDING STEP 3D(15). OPS CHECKED RT MLG DOOR IAW 3D(14) A&B AND 16 THRU STEP 24 OPS CHECK GOOD AT THIS TIME AND ALL CHECKS AND CLEARANCES GOOD REF AMM 32-14-01-2,32-34-03-2-1,32-34-03-2, WORK INSTRUCTION WORK CARD PART 1 EO 8-5280-7-5000 AND ERS 12-06074.