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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.
| Attributes | |
| ACN | 1305268 |
| Time | |
| Date | 201510 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Cessna Citation Sovereign (C680) |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Descent |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Pitot-Static System |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Inflight Event / Encounter Unstabilized Approach Inflight Event / Encounter Weather / Turbulence |
Narrative:
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.
Original NASA ASRS Text
Title: 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.
Narrative: 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.
Data retrieved from NASA's ASRS site 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.