As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
5/11/2009 ACFT 8423C FLIGHT NR 2132 MCI/MSP, ON APPROACH WHEN FLAPS SELECTED DOWN FAILED AT 20 DEGREES. FLIGHT CREW REPORTED TO MAINTENANCE THAT THEY MISTAKENLY MOVED THE FLAP SELECTOR A SECOND TIME BEFORE THE FLAPS REACHED THE FIRST SELECTED DEGREE SETTING. THIS ACTION WILL RESULT IN A "FLAPS FAIL" MESSAGE. MAINTENANCE TROUBLESHOT FLAP SYSTEM IAW FIM PER AD 2009-06-12 PARA (H)(6)(I), NO DEFECTS FOUND.