As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, LANDING GEAR WOULD NOT RETRACT. HANDLE COULD NOT BE MOVED FROM THE FULL DOWN POSITION. R & R MLG CONTROL UNIT 2 GA AS PER MM 32-31-11-4. R & R PROXIMITY DETECT UNIT 54GB AS PER MM 32-31-71-4. PERFORMED NORMAL ETRACTION AND EXTENTION AS PER MM 32-31-00-5 SEVERAL TIME ON BOTH SYSTEM ALL CHECK OK A/C JACKING AND LOWERING AS PER MM 07-11-00-0.