As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AFTER TAKEOFF LANDING GEAR FAILED TO RETRACT. ECAM-GEAR DISAGREE. ECAM-PROCEDURE COMPLIED WITH. GEAR RECYCLED-SUCCESSFULLY RETRACTED. ACCOMPLISHED TSM 32-31-00-810-842. FOUND PROXIMITY SENSOR 24GA OUT OF RANGE AT 39OHMS. REMOVED AND REPLACED PROXIMITY SENSOR AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 32-31-73..