What was found
FLAPS FAIL CAUTION ON APPROACH WHEN FLAPS SELECTED TO 8 AT APPROXIMATELY 190 KIAS QRH COMPLETED. TOUCHDOWN OCCURRED AT 300 FPM PERFORMED TROUBLESHOOTING PER FIM 27-50-00 REV 5 IAW AD 2009-06-12 PARAGRAPH (H)(6)(I), AMOC LOG 16-26 DATED 5/27/2016 AND TS 00110R3 FIM TECH SUPPLEMENT. FECU FAULT CODES 5 1A,5 2A,17 1B,17 2B,5 2A,17 1B. R&R RT IB IB AND RT IB OB ACTUATORS IAW AMM 27-53-01. OPC OF FLAP SYSTEM GOOD IAW AMM 27-54-00. P/NS ON/OFF 852D100-25, S/N ON 3882, OFF 5669 FOR RT IB, S/N ON 6433, OFF 7370 FOR RT IB OB.