As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLAP POWER CATION ON APPROACH. WENT MISSED APPROACH AND DECLARED EMERGENCY. RAN THE CHECKLIST AND LANDED FLAP ZERO. REMOVED FROM SERVICE. INTERROGATED CDS FOUND FAULT ARMING SWITCH ON FLAP PAGE.C\W Q400 FIM 27-50-00-810-805 STEP (4)(A)(1).R+R THE FLAP CONTROL MODULE IAW Q400 AMM 27-51-06-000/400-801.PERFORMED OPS TEST OF WING FLAPS PER Q400 AMM 27-50-00710801.FLAP POWER CAUTION DID NOT COME BACK ON.ALL OPS TEST PASS.NO FURTHER DEFECTS NOTED.