As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT HAND TRAILING EDGE FLAP FLUTTERS VISIBLY AT FLAPS 5 ABOVE 200 KTS. OK AT 190 KTS AND AT ALL OTHER FLAP SETTINGS. INSPECTED AND FOUND THE NR 7 FLAP JACKSCREW GEAR BOX END UNIVERSAL JOINT BUSHINGS WORN. OVERHAULED THE NR 7 FLAP JACKSCREW GEAR BOX END UNIVERSAL JOINT IAW BOEING OVERHAUL MANUAL 27-55-56. OP'S CHECKED FLAPS PER BOEING MM 27-51-73 AND OP'S CHECKED GOOD.