A LEAR 25 ATX MAKES APCH TO YYC ARPT TO LOWER THAN AUTH MINIMUMS; MAKES MISSED APCH; CLBS BACK THROUGH THE HVY ICING AND AFTER TURNING OFF INFLT IGNITION WHEN IN THE CLR; BOTH ENGS FLAME OUT. EMER DECLARED. PROCEED TO ALTERNATE.

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PROB AROSE DUE TO SEVERE ICING CONDITIONS. RPTED CONDITIONS WERE NOT WHAT THE REALITY WAS (WX WAS BELOW LOWEST MINIMUMS FOR OUR OPS BUT WAS RPTED TO BE AT OUR LOWEST OPS MINIMUMS). AFTER EXECUTING A MISSED ILS APCH; WE CLBED TO FL220 AND LEVELED OFF. BOTH ENGS FLAMED OUT WITHIN 5 SECONDS OF EACH OTHER. HOLDING ALT AND LETTING ACFT SPD SLOW; WE DETERMINED THAT A RELIGHT WAS POSSIBLE. AFTER RELIGHTING BOTH ENGS; WE PROCEEDED TO EDMONTON; ALBERTA; AS AN ALTERNATE. (ON DSCNT AND CLBOUT; WE FLEW THROUGH AN INVERSION LAYER.) WE WERE ATTEMPTING TO MAKE OUR CONTRACTED DEST. WX RPT (ATIS) WAS NOT ACCURATE; THE ICING CONDITIONS WERE MUCH WORSE THAN RPTED. CREW SHOULD HAVE ELECTED TO GO TO ALTERNATE (NOT ATTEMPTING APCH TO CALGARY; ALBERTA). CREW HAD FUEL CONSIDERATIONS TO CONSIDER ALSO. ICING CONDITIONS SEEMED TO BE SO SEVERE THAT ACFT'S ANTI- AND DE-ICING EQUIP COULD NOT HANDLE IT. SUPPLEMENTAL INFO FROM ACN 352834: THE PROB AROSE FROM ICING. ON THE DSCNT TO CALGARY THROUGH 12000 FT ON DOWN TO 6000 FT; WE PICKED UP MOST OF THE ICING; CONSIDERED TO BE MODERATE TO SEVERE. ICING EQUIP ON. NACELLES HEAT ON; WINGS AND STABILIZER HEAT ON. SHOT ILS INTO CALGARY INTL TO MINIMUMS. MISSED APCH. PICKED UP MORE ICING TO ABOUT THE SAME ALT -- IGNITION WAS ON. COMING OUT OF VISIBLE MOISTURE AT APPROX 12000 FT; IGNITION WAS TURNED OFF. EMER WAS DECLARED. PROCEEDED ON SAME CLRNC TO ALTERNATE ARPT (CYXD -- EDMONTON MUNICIPAL). POSSIBLE; MOST LIKELY CAUSE -- ICE INGESTION. IN EDMONTON; REPLACED R ENG; BENT BLADES ON FIRST STAGE 4; AFTER 'DRESSING UP' L ENG (SEVERAL NICKS). SUGGESTIONS: LEAVE IGNITION ON FOR UNDETERMINED AMOUNT OF TIME AFTER ENCOUNTERING SEVERE ICING CONDITIONS; AS WELL AS ICING (OBVIOUSLY) EQUIP ON UNTIL ALL INDICATION OF ANY ICING IS GONE.