Citation X (C750)
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Situational Awareness; Confusion; Troubleshooting
Aircraft Equipment Problem Less Severe; Ground Event / Encounter Weather / Turbulence
Aircraft Equipment Problem Dissipated; Flight Crew Overcame Equipment Problem
Human Factors; Weather; Aircraft; Procedure; Company Policy
This event had to do with both Primary Flight Displays airspeed indications giving crew error readouts. The aircraft had been sitting outside during the snowstorm we had in the northeast. We followed deice and anti-ice procedures per Cold Weather Ops. Checklist. Passing through 210 kts (211) both IAS indications turned red indicating we were in a overspeed indication. Both landing gear and flaps/slat were verified up by checklist usage and visually from the cabin. With our resources we verified IAS were correct even though they were indicating in the Red. We ran appropriate checklist and verified aircraft performance charactertics utilizing all aircraft instrumentation. We advised the maintenance (coordinating with cessna) and agreed continuing on to destination would be the right decision with our situation. Both of us agreed with solution and agreed we we're safe to continue. Upon slowing in to ZZZ at 210 kts both Primary Flight Display IAS indications returned to Green Normal color. We landed with all normal indications. With my XX years of aviation commercial experience; I don't agree with the Cold Weather Checklist. It tells us to extend flaps to 35 for de-ice and 0 degrees for anti-ice. My experience has always kept Flaps up during both these procedures; so to prevent fluid getting on full flap area that sits under wing when retracted. Selecting Flaps once nearing runway so to prevent snow and slush from getting on Full Flap area would be a better practice; while protecting a major portion of flap area from icing conditions waiting to takeoff.Suggest looking at how we perform de/anti-icing procedures on the fleet.
First Officer reported during climb out both airspeed indicators began giving erroneous readings.