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Piper pilot encounters icing that was not forecast resulting in up to one half inch airframe ice as well as blocked pitot during descent to diversion airport.
| Attributes | |
| ACN | 454745 |
| Time | |
| Date | 199911 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : elm.airport |
| State Reference | NY |
| Altitude | msl single value : 9000 |
| Environment | |
| Flight Conditions | IMC |
| Weather Elements | Ice |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : elm.tracon |
| Operator | general aviation : personal |
| Make Model Name | PA-32 Cherokee Six/Lance/Saratoga |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : commercial pilot : instrument pilot : multi engine |
| Experience | flight time last 90 days : 30 flight time total : 1000 flight time type : 250 |
| ASRS Report | 454745 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | aircraft equipment problem : critical inflight encounter : weather inflight encounter other |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : provided flight assist flight crew : diverted to another airport |
| Supplementary | |
| Problem Areas | Environmental Factor Weather |
| Primary Problem | Weather |
Narrative:
Airmet for icing in michigan. None in new york. Ice accumulation in descent to elm. Had ice on departure from hpn but trace rime. Diverted to elm. Pitot iced over and lost airspeed. Because of 40 KT headwinds, estimation of airspeed by GPS ground speed difficult. Handling by ATC was excellent. They contacted elm for emergency equipment though none asked for, nor was emergency declared. Picked up about 1/4-1/2 inch mixed ice. No handling problems despite winds of 11 KTS gusting 28 KTS at elm. Forecasting ice difficult and no PIREPS available. Would decriminalize icing in aircraft not certified for flight into 'known' ice to get more reports from pilots of singles.
Original NASA ASRS Text
Title: PIPER PLT ENCOUNTERS ICING THAT WAS NOT FORECAST RESULTING IN UP TO ONE HALF INCH AIRFRAME ICE AS WELL AS BLOCKED PITOT DURING DSCNT TO DIVERSION ARPT.
Narrative: AIRMET FOR ICING IN MICHIGAN. NONE IN NEW YORK. ICE ACCUMULATION IN DSCNT TO ELM. HAD ICE ON DEP FROM HPN BUT TRACE RIME. DIVERTED TO ELM. PITOT ICED OVER AND LOST AIRSPD. BECAUSE OF 40 KT HEADWINDS, ESTIMATION OF AIRSPD BY GPS GND SPD DIFFICULT. HANDLING BY ATC WAS EXCELLENT. THEY CONTACTED ELM FOR EMER EQUIP THOUGH NONE ASKED FOR, NOR WAS EMER DECLARED. PICKED UP ABOUT 1/4-1/2 INCH MIXED ICE. NO HANDLING PROBS DESPITE WINDS OF 11 KTS GUSTING 28 KTS AT ELM. FORECASTING ICE DIFFICULT AND NO PIREPS AVAILABLE. WOULD DECRIMINALIZE ICING IN ACFT NOT CERTIFIED FOR FLT INTO 'KNOWN' ICE TO GET MORE RPTS FROM PLTS OF SINGLES.
Data retrieved from NASA's ASRS site as of July 2007 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.