As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED FLAP FAIL AMBER CAUTION MESSAGE IN FLT OCCURRED WHEN SELECTING FLAPS TO 20 DEG FLAPS FAIL AT 8 DEG. AIRCRAFT LANDED IN PHL WITHOUT INCIDENT. MAINTENANCE PERFORMED FAULT ISOLATION OF FLAP SYSTEM USING THE AIRCRAFT FAULT ISOLATION MANUAL. MAINTENANCE REMOVED AND REPLACED THE FLAP CONTROL LEVER PER THE AIRCRAFT MAINTENANCE MANUAL. CHECKS WERE MADE PER THE AIRCRAFT MAINTENANCE MANUAL AND AIRCRAFT WAS RELEASED FOR SERVICE.