As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHL-GSO - FLT 989 - LEFT MAIN GEAR WOULD NOT RETRACT. CYCLED GEAR, BUT CONDITION STILL EXISTED. SELECTED GEAR DOWN AND GOT THREE GREEN INDICATION. FLIGHT RETURNED TO FIELD AND LANDED WITH NO FURTHER PROBLEMS. MAINTENANCE TIGHTENED LOOSE GEAR DOOR BUFFER AND SAFETIED LOCK PIN. SWUNG GEAR FIVE TIMES. OPS CHECKED OK. (M)