As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED AFTER TAKEOFF THEY WERE UNABLE TO MOVE LANDING GEAR HANDLE OUT OF DOWN POSITION. LANIDNG GEAR WOULD NOT RETRACT. REMOVED AND INSTALLED LT MLG FWD PROXIMITY SWITCH AND HARNESS IAW JIC 32-61-00 RAI 10000 AND AMM 20-21-00. OPS CHECKED GOOD.