As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: DURING APPROACH FLAPS HAD ASYMMETRY. AIRCRAFT EMERGENCY LANDED SAFELY AT DTW. FSEU SHOWS MM 27-53256 IN FAULT HISTORY. INTERMITTENT ON FSEU. REMOVE AND REPLACED FLAP SKEW 7 SENSOR. PER AMM 27-59-01 AND FIM 27-59-00-810-807. OPERATIONAL CHECK GOOD WITH NO OTHER FAULT.