As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6250 - ABE-IAD - DURING CLIMB, AIRCRAFT MADE A UNSCHEDULED LANDING DUE TO ALL THREE GEAR WOULD NOT RETRACT. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND PERFORMED GEAR SWINGS AND COULD NOT DUPLICATE PROBLEM, OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)