As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRSHUTTLE 6412 FROM PHX TO COS DECLARED AN EMERGENCY AND RETURNED TO THE FIELD DUE TO THE FLAPS SYSTEM FAILING AT DEGREES. MAINTENANCE HAD REPLACED THE LT IB FLAP ACTUATOR THE NIGHT BEFORE FOR A PREVIOUS FAILURE. MAINTENANCE IS STILL TROUBLESHOOTING.