As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLAPS FAIL CAUTION MESSAGE RECEIVED ON APPROACH. FLAPS FAILED AT 4 DEGREES. NR 3 FLAP ACTUATOR ON LT SIDE CHATTERS ON EXTENSION. REMOVED FLAP PDU AND REPLACED IT WITH A SERVICEABLE UNIT IAW CL600 27-52-05. INFLIGHT FUNCTION TEST REQUIRED - FAILED. REMOVED AND REPLACED LT NR 3 FLAP ACTUATOR. OPS CHECK GOOD IAW RII 27-412. PCU PN OFF 865D100-7 SN OFF 0870.