As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) LANDING GEAR DID NOT RETRACT AFTER TAKEOFF MAINTENANCE FOUND THE CENTERING MECHNISM WAS LOOSE AT THE MOUNTING BOLTS. WHEN THE HARNESS WAS FLEXED THE PROXIMITY SENSOR WOULD CHANGE FROM NEAR TO FAR. CENTERING MECHANISM ASSY REPLACED, OPS CHECK OK, ACFT RTS.