As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DCA - FLT 1764 - AFTER TAKEOFF, THE LANDING GEAR WOULD NOT RETRACT. THE LANDING GEAR HANDLE WOULD NOT MOVE PAST THE OFF POSITION. FLIGHT RETURNED TO FIELD AT DCA. NO EMERGENCY WAS DECLARED AND THE FLIGHT LANDED WITH NO FURTHER INCIDENT. MAINTENANCE RESET THE LATCH AND CIRCUIT BREAKER AND REPLACED THE AIR SENSING SQUAT SWITCH CARD M991. PERFORMED INTEGRITY CHECK ON GEAR HANDLE SYSTEM. OPS CHECK GOOD. (M)