As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT ON 5060 THE GEAR WOULD NOT RETRACT AND GEAR DISAGREE AND PROX SYS FAULT MSGS DISPLAYED. PILOTS COORDINATED WITH DISPATCH AND RETURNED TO FIELD IN DCA. FLIGHT LANDED IN DCA WITHOUT FURTHER INCIDENT.R/R LANDING GAR CONTROL PANEL LEVER OPS CHECK GOOD. LANDING GEAR LEVER P/N: 53344-3 S/N: 0903