Flight Crew Air Transport Pilot (ATP)
Communication Breakdown; Confusion; Distraction; Human-Machine Interface; Workload
Aircraft Equipment Problem Critical; Inflight Event / Encounter Unstabilized Approach; Inflight Event / Encounter Weather / Turbulence
Flight Crew Became Reoriented; Flight Crew Executed Go Around / Missed Approach; Flight Crew Took Evasive Action; General Maintenance Action
Aircraft; Weather
During descent into our destination the airspeed indicators showed a difference of more than 25 knots. The Autopilot failed. Engine control faults were cycling. The anti-ice had been on for a minimum of 15 minutes before entering into the precipitation. Due to conflicting airspeed indications and altitude indications; the first attempt at a landing was abandoned by me calling go around; as we were not established and stable. The second attempt was successful; but we lost communications with ATC due to the radio interference from the weather. I believe that this was a circumstantial event; and that maintenance was a large factor; but earlier recognition of the flights disparities would have eased the situation.
A C-680 on descent in heavy precipitation developed a 25 knot airspeed discrepancy along with autopilot and engine control malfunctions. A go-around was executed from an unstabilized approach with airspeed and altitude discrepancies.