As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDING GEAR FAILED TO RETRACT. COULD NOT MOVE HANDLE TO "UP" POSITION. REMOVED AND REPLACED PROXIMITY ELEC UNIT PER AMM REF 32-31-71-04. REMOVED AND REPLACED LEFT MAIN LANDING GEAR BOGIE BEAM PROXIMITY DETECTORS FOR SYSTEM NR 1 AND 2. PRESSURE LUBRICATED BOTH BOGIE BEAM PIVOT PINS. PERFORMED GEAR SWING BOTH SYSTEMS PER 32-31-00-05. NO DEFECTS NOTED. SMOOTH PIVOT OF BOGIE BEAMS OBSERVED.