As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PIT - FL 696 - AFTER TAKEOFF, CREW COULD NOT RAISE GEAR HANDLE. AFTER RAISING THE GEAR WITH THE LOCK OVERRIDED AND RETRACTING THE FLAPS, THE TAKEOFF WARNING HORN SOUNDED CONTINOUSLY. FLIGHT RETURNED TO FIELD AT PIT AND LANDED WITHOUT FURTHER INCIDENT. NO EMERGENCY WAS DECLARED. MAINTENANCE REMOVED AND REPLACED THE M991 GROUND SENSE LOGIC CARD PER MM 32-09-20. OPERATIONAL CHECK GOOD. (M)