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An instrument rated private pilot flying a BE33 exercises his emergency authority/authorized to deviate from his assigned altitude because of icing conditions near gri, northeast.
| Attributes | |
| ACN | 452300 |
| Time | |
| Date | 199910 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| State Reference | NE |
| Altitude | msl single value : 8000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zmp.artcc |
| Operator | general aviation : personal |
| Make Model Name | Bonanza 33 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Route In Use | enroute airway : v8.airway |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : private pilot : instrument |
| Experience | flight time last 90 days : 45 flight time total : 1300 flight time type : 200 |
| ASRS Report | 452300 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar flight crew : single pilot |
| Qualification | controller : radar |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude inflight encounter : weather |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | controller : issued new clearance controller : provided flight assist flight crew : took precautionary avoidance action flight crew : exited adverse environment |
| Supplementary | |
| Problem Areas | Weather |
| Primary Problem | Weather |
Narrative:
Flying west on V8 past gri 8000 ft MSL, tops rose above cruising altitude while on IFR flight plan. Observed temperature at about 0 degrees C, pitot heat on defroster on high began to build ice (rime). Called controller twice within 30 seconds. I then heard another aircraft talking with center. At about 45 seconds, I began to climb. Made contact with center at 8500 ft requesting permission to climb to 10000 ft. Center gave permission to climb. At this point, tops were over 10000 ft and still building 'slight' ice. Requested climb to 12000 ft, temperature -6 degrees C. Center reminded me that I needed permission to climb from altitude.
Original NASA ASRS Text
Title: AN INST RATED PVT PLT FLYING A BE33 EXERCISES HIS EMER AUTH TO DEVIATE FROM HIS ASSIGNED ALT BECAUSE OF ICING CONDITIONS NEAR GRI, NE.
Narrative: FLYING W ON V8 PAST GRI 8000 FT MSL, TOPS ROSE ABOVE CRUISING ALT WHILE ON IFR FLT PLAN. OBSERVED TEMP AT ABOUT 0 DEGS C, PITOT HEAT ON DEFROSTER ON HIGH BEGAN TO BUILD ICE (RIME). CALLED CTLR TWICE WITHIN 30 SECONDS. I THEN HEARD ANOTHER ACFT TALKING WITH CTR. AT ABOUT 45 SECONDS, I BEGAN TO CLB. MADE CONTACT WITH CTR AT 8500 FT REQUESTING PERMISSION TO CLB TO 10000 FT. CTR GAVE PERMISSION TO CLB. AT THIS POINT, TOPS WERE OVER 10000 FT AND STILL BUILDING 'SLIGHT' ICE. REQUESTED CLB TO 12000 FT, TEMP -6 DEGS C. CTR REMINDED ME THAT I NEEDED PERMISSION TO CLB FROM ALT.
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.