As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) GEAR WAS SELECTED UP AND THE GEAR WOULD NOT RETRACT. THE SELECTION WAS TRIED SEVERAL TIMES AND FINALLY RETRACTED.A LOOSE WIRE WAS FOUND ON THE EMERGENCY EXTENSION MICROSWITCH LOCATED BY THE GEAR TRANSMISSION. THE CONNECTION WAS RESECURED.