As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MDT - FLT 9 - AFTER TAKEOFF, CREW RECEIVED THE EICAS MESSAGE 'TE FLAP ASYM' RETRACTING THE FLAPS. FLIGHT RETURNED TO MDT AND LANDED WITH NO FURTHER INCIDENT. MAINTENANCE FOUND THE RIGHT WING FLAP TRANSMITTER HAD A SHEARED INPUT SHAFT AND REPLACED THE TRANSMITTER (X)