As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDING IN DTW CREW REPORTED FLAPS WOULD NOT EXTEND. COMPLETED ALL FLAPS LANDING. FLAPS WILL NOT EXTEND DN FLAPS 0 AT DTW ALL CB IN. REMOVED AND REPLACED FLAP CONTROL VALVE S/N ON 1168, S/N OFF 1588 IAW SAAB MM CHAP 27 SEE 409 CARD FOR DEATILS, ALL CHECKS GOOD.