As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6309 - BWI-BOS - DURING TAKEOFF, AIRCRAFT MADE AN UNSCHEDULED LANDING DUE TO LANDING GEAR WOULD NOT RETRACT. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. AIRCRAFT FERRIED TO IAD WHERE MAINTENANCE INSPECTED AND REPAIRED BROKEN WIRE TO PIN M AT THE GEAR SELECTOR CONNECTOR, OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)