As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB-OUT FROM KTOL LANDING GEAR WOULD NOT RETRACT. THE CREW GOT A INFLIGHT INDICATION OF MECHANICAL AND ELECTRICAL GROUND SHIFT FAILURE. THE CREW RETURNED TO KTOL AND LANDED WITHOUT INCIDENT. MAINTENANCE RAISED THE AIRCRAFT OFF THE GROUND AND PERFORMED NUMEROUS EXTENSION AND RETRACTION OF THE LANDING GEAR. OPERATIONAL CHECK GOOD IAW DACO DC-8 MAINTENANCE MANUAL 32-30 AND DACO 7-10-0. AIRCRAFT WAS RETURNED TO SERVICE.