Regional Jet 700 ER/LR (CRJ700)
Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Troubleshooting; Distraction; Workload
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Weather / Turbulence; Inflight Event / Encounter Unstabilized Approach
Flight Crew Overcame Equipment Problem
Aircraft; Weather
We were in icing conditions with wing and cowl anti-ice both on. We got an anti-ice duct warning message; which went away before we made it through the QRH checklist. We completed the QRH anyway; then we got a right cowl anti-ice caution message. We did the QRH for that and it also went away. Then we got the anti-ice duct caution message; but it went away right away...it flashed on and right back off. One other time the anti-ice duct warning message flashed; but it went off right away. As we were dealing with all of these messages and doing the QRH; I noticed the left engine vibe went all the way to 3.0 in the red; and the aircraft started to yaw. I got on the rudder to keep it going straight; and as I did that the vibe went into the yellow; then into the green and it stopped yawing. As we were coming in on the approach; the caution message flashed a couple more times (I can't remember which one); and I was preoccupied with those and keeping my eye on the left engine vibe; and after we landed we realized we had landed with flaps 30. We forgot to finish configuring.
CRJ-700 Captain reported landing aircraft with incorrect configuration due to multiple intermittent EICAS warning messages.