As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF LANDING GEAR DID NOT RETRACT COMPLETLY AND CONTINUED TO EXTEND AND RETRACT CONSTANTLY. R & R PROXIMITY SENSORS 52EB AND 53 GB AT NLG IAW JIC 32-61-00 AND R & R CONTROL LEVEL IAW JIC 32-31-81. PERFORMED RETRACTION TEST FOUND OK 32-31-00.