As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAD/EWR - FLT 7538 - DURING CLIMB, AIRCRAFT MADE AN UNSCHEDULED LANDING AT IAD DUE LANDING GEAR NOT RETRACTING AFTER TAKEOFF. MAINTENANCE ADJUSTED AOG SWITCH AND PERFORMED GEAR SWINGS, OPS CHECK GOOD. AIRCRAFT RELEASED AND APPROVED FOR RETURN TO SERVICE. (X)