Narrative:

I was acting as the first officer on flight from ZZZ to ZZZ2. We left the gate and proceeded over to the ramp, where we were deiced with type I and type iv deicing fluid. I then called for taxi clearance. We were instructed to taxi to runway 36L. While waiting for our takeoff clearance, tower reported that an MD11 had reported moderate to severe icing on final approach. I looked at my captain and stated severe icing. She said 'disregard,' and we were cleared onto the runway for takeoff. During our climb out, we encountered no ice, but moderate turbulence. During our normal callouts of acceleration altitude, and V2 +12 KTS, the captain asked for flaps 8 degrees, which I responded with flaps 8 degrees. I then called out V2 +20 KTS. She then asked for 'flaps up, set climb thrust.' I responded by selecting the flaps to zero and setting climb thrust. When we received a master caution, I cancelled and idented that the flaps had failed. We notified ATC and requested to level off at 16000 ft, where we ran checklists and notified company of the situation. We were instructed to divert to ZZZ3, where we declared an emergency and executed a no-flap landing, where we landed without incident and deplaned the passenger. I believe the situation was due to the WX conditions at the airport at the time of departure.

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Original NASA ASRS Text

Title: CL65 TOOK OFF WITH SEVERE ICE RPTED BY A LARGE ACR. THE TRAILING EDGE FLAPS FAILED BEFORE THE FLAPS WERE RETRACTED.

Narrative: I WAS ACTING AS THE FO ON FLT FROM ZZZ TO ZZZ2. WE LEFT THE GATE AND PROCEEDED OVER TO THE RAMP, WHERE WE WERE DEICED WITH TYPE I AND TYPE IV DEICING FLUID. I THEN CALLED FOR TAXI CLRNC. WE WERE INSTRUCTED TO TAXI TO RWY 36L. WHILE WAITING FOR OUR TKOF CLRNC, TWR RPTED THAT AN MD11 HAD RPTED MODERATE TO SEVERE ICING ON FINAL APCH. I LOOKED AT MY CAPT AND STATED SEVERE ICING. SHE SAID 'DISREGARD,' AND WE WERE CLRED ONTO THE RWY FOR TKOF. DURING OUR CLBOUT, WE ENCOUNTERED NO ICE, BUT MODERATE TURB. DURING OUR NORMAL CALLOUTS OF ACCELERATION ALT, AND V2 +12 KTS, THE CAPT ASKED FOR FLAPS 8 DEGS, WHICH I RESPONDED WITH FLAPS 8 DEGS. I THEN CALLED OUT V2 +20 KTS. SHE THEN ASKED FOR 'FLAPS UP, SET CLB THRUST.' I RESPONDED BY SELECTING THE FLAPS TO ZERO AND SETTING CLB THRUST. WHEN WE RECEIVED A MASTER CAUTION, I CANCELLED AND IDENTED THAT THE FLAPS HAD FAILED. WE NOTIFIED ATC AND REQUESTED TO LEVEL OFF AT 16000 FT, WHERE WE RAN CHKLISTS AND NOTIFIED COMPANY OF THE SIT. WE WERE INSTRUCTED TO DIVERT TO ZZZ3, WHERE WE DECLARED AN EMER AND EXECUTED A NO-FLAP LNDG, WHERE WE LANDED WITHOUT INCIDENT AND DEPLANED THE PAX. I BELIEVE THE SIT WAS DUE TO THE WX CONDITIONS AT THE ARPT AT THE TIME OF DEP.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.