As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLAPS WOULD NOT EXTEND PAST 15 DEG, NO SPLIT OBSERVED. CREW REPORTS NO "NEEDLE SPLIT" & NO ABNORMAL ROLL CONTROL INPUTS REQUIRED. CONDUCTED VISUAL INSPECTION OF FLAP TRACK & DRIVE MECHANISM. FOUND SEVERAL DRY JACK SCREWS. LUBED SCREWS & BALL NUTS REF MM 12 22 51. ACCOMPLISHED ASYMMETRY TEST PER MM 27 51 00. CYCLED FLAPS MANY TIMES NO ABNORMAL FUNCTION OR INDICATION NOTED.