As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF FLAP WOULD ONLY RETRACT 3 TO 4 DEGREES. CREW TRIED CYCLING FLAPS WITH NO SUCCESS. PUT FLAPS TO 15 DEGREES AND RTF IN PGV. UPON LANDING FLAPS RETRACTED BUT CAPTAIN SAID THE LEFT FLAP WAS JERKY. CREW OPERATED FLAPS ON THE GROUND. OPS CHECKED GOOD. MAINTENANCE REQUESTED TEST FLIGHT. TEST FLIGHT SUCCESSFUL AIRCRAFT RETURNED TO SERVICE. (M)