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Pilot of a beech turbo baron, BE58TC, deviated from assigned altitude due to strong up and downdrafts in thunderstorms. Unforecast WX encountered for route of flight.
| Attributes | |
| ACN | 367830 |
| Time | |
| Date | 199704 |
| Day | Wed |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | atc facility : gck |
| State Reference | KS |
| Altitude | msl bound lower : 12000 msl bound upper : 12000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Night |
| Aircraft 1 | |
| Operator | general aviation : personal |
| Make Model Name | Baron 58/58TC |
| Flight Phase | cruise other |
| Route In Use | enroute airway : zkc |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 80 flight time total : 1300 flight time type : 450 |
| ASRS Report | 367830 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude inflight encounter : weather non adherence : clearance other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : exited adverse environment other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Weather |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We got a WX briefing in wichita that said as long as we were south of goodland we should be in the clear as far as storms. En route we tried to reach flight watch to get an update as well as flight service, but got no response. ZKC advised us of a convective segmet now issued for that area. We proceeded into the storms as stormscope indicated nothing in our path. We saw updrafts-downdrafts of 2000 FPM. The plane almost stalled over 5 different times. Lowering the gear I believe helped dramatically. The controller took us south to get us out of the storms and had to find us an airport to land at. We hadn't planned a way out as we didn't think we should encounter thunderstorms. In the future I'll give thunderstorms a much greater margin. I'll always plan a way out!
Original NASA ASRS Text
Title: PLT OF A BEECH TURBO BARON, BE58TC, DEVIATED FROM ASSIGNED ALT DUE TO STRONG UP AND DOWNDRAFTS IN TSTMS. UNFORECAST WX ENCOUNTERED FOR RTE OF FLT.
Narrative: WE GOT A WX BRIEFING IN WICHITA THAT SAID AS LONG AS WE WERE S OF GOODLAND WE SHOULD BE IN THE CLR AS FAR AS STORMS. ENRTE WE TRIED TO REACH FLT WATCH TO GET AN UPDATE AS WELL AS FLT SVC, BUT GOT NO RESPONSE. ZKC ADVISED US OF A CONVECTIVE SEGMET NOW ISSUED FOR THAT AREA. WE PROCEEDED INTO THE STORMS AS STORMSCOPE INDICATED NOTHING IN OUR PATH. WE SAW UPDRAFTS-DOWNDRAFTS OF 2000 FPM. THE PLANE ALMOST STALLED OVER 5 DIFFERENT TIMES. LOWERING THE GEAR I BELIEVE HELPED DRAMATICALLY. THE CTLR TOOK US S TO GET US OUT OF THE STORMS AND HAD TO FIND US AN ARPT TO LAND AT. WE HADN'T PLANNED A WAY OUT AS WE DIDN'T THINK WE SHOULD ENCOUNTER TSTMS. IN THE FUTURE I'LL GIVE TSTMS A MUCH GREATER MARGIN. I'LL ALWAYS PLAN A WAY OUT!
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.