As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE LT MLG FAILED TO RETRACT AFTER TAKEOFF. FOUND TWO BROKEN WIRES ON THE LT MLG UPLOCK SWITCH. THE WIRES APPEARED TO BE OLD AND BRITTLE. REPAIRED THE TWO BROKEN WIRES AND ALL OTHER WIRES AT THE UPLOCK SWITCH. PERFORMED A FUNCTIONAL TEST OF THE LANDING GEAR SYSTEM.