As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 6418 - IAD-BOS - DURING CLIMB-OUT RETURNED TO IAD DUE TO THE LANDING GEAR NOT RETRACTING WHEN SELECTED UP AND THE GEAR HANDLE WOULD NOT SELECT UP. AIRCRAFT LANDED AT IAD WITH NO FURTHER INCIDENTS. MAINTENANCE REPLACED THE LEFT WEIGHT ON WHEELS SWITCH. A MAINTENACNE ACCEPTANCE FLIGHT WAS REQUIRED AND PERFORMED SATISFACTORILY. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)