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ASRS 1963927

ACN 1963927 · 2023-01 · PA-30 Twin Comanche

PA-30 flight crew reported difficulties maintaining airspeed and altitude in icing conditions. The flight crew requested vectors to land at destination airport.

Commuter and GA Icing Incidents DescentPart 91

Pilot narratives

Verbatim, de-identified by NASA. Placeholders: ZZZ, X, Y.

Reporter 1

Flying IFR at passing 7,000 feet during descent we encountered icing conditions. As we were leveling off at 5,000 feet our airspeed started dropping quickly. We were attempting to maintain our airspeed and request a lower altitude from Approach Control but the frequency was busy. At that point our airspeed indication went out and was unavailable. We may have deviated off our altitude before we got a clearance to descend and maintain 3,000 feet from ZZZ Approach. It was a busy time in night IMC conditions. We were subsequently handed off to ZZZ1 Approach and cleared to 2,600 feet and then 2,400 feet on our approach to the ZZZ Airport.

Reporter 2

Flying IFR at night passing 7,000 feet during descent we encountered icing conditions. As we were leveling off at 5,000 feet our airspeed started dropping quickly. We were attempting to maintain our airspeed and request a lower altitude from approach control but the frequency was busy. At that point our airspeed indication went out and was unavailable. We may have deviated from our altitude before we got a clearance to descend and maintain 3,000 feet from ZZZ Approach, it was a busy time in night IMC conditions. We were subsequently handed off to ZZZ1 Approach and cleared to 2,600 feet and then 2,400 feet on our approach to the ZZZ Airport.

NASA classification · Anomalies

  • Aircraft Equipment Problem
  • Deviation - Altitude
  • Deviation - Speed
  • Deviation / Discrepancy - Procedural
  • Inflight Event / Encounter

NASA classification · Assessments

Contributing Factors / Situations
Aircraft
Primary Problem
Aircraft

ASRS reports are voluntary, de-identified by NASA, and represent the reporter's perspective; they are not investigated and cannot be used to infer prevalence. Authoritative source: asrs.arc.nasa.gov ↗