What was found
DURING APPROACH FLAPS FAIL CAUTION MESSAGE DURING INITIAL ATTEMPT TO EXTEND FLAPS. FAILED AT 0 DEG IN A LEVEL TURN AT 4000 MSL, TEMP -19 DEG C AIRSPEED 190KTS TIME IN FLIGHT 53MIN. PERFORMED TROUBLESHOOTING IAW FIM REV 4S IAW AD2009-06-12 PARAGRAPH H 6 I AMOC DATED JULY 22,2013 & PAAD27-052N. R & R LT NR 1 & NR 4 ACTUATORS IAW AMM 27-53-01 & 27-53-05. R & R LT NR 5 FLEX SHAFT IAW AMM 27-53-10. ALL OPERATIONAL & RIG CHECKED GOOD.