What was found
FLAP FAIL CAS MESSAGE DURING DECENT, WHEN MOVING FLAP SELECTOR FROM 0 TO 1. QRH FOLLOWED AND CREW DIVERTED. MX PERFORMED MULTIBLE OPERATIONAL CHECKS IAW MM. NO ISSUE IDENTIFIED. MANUFACTURER IS RECOMMENDING REPLACING THE FCES IAW SERVICE BULLETIN 505-27-0022. REPLACED FCE 1 & 2 IAW SB AND FLAP POWER DRIVE UNIT. OPS AND FUNCTIONAL CHECKED IAW AMM. FCE REMOVED, PN 462900-1011, SN 0124, 0097. FCE INSTALLED PN 462900-1017, SN 0837, 0840.