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Pilot of BE35 on IFR climb encounters building cumulus and vertical wind shear which results in altitude deviation.
| Attributes | |
| ACN | 380510 |
| Time | |
| Date | 199709 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : orl |
| State Reference | FL |
| Altitude | msl bound lower : 9000 msl bound upper : 9800 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : mco tower : lax |
| Operator | general aviation : personal |
| Make Model Name | Bonanza 35 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : intermediate altitude cruise other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 30 flight time total : 6210 flight time type : 2500 |
| ASRS Report | 380510 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : radar |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude inflight encounter : weather non adherence : clearance |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Weather |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Assigned 9000 ft in control area, IFR in building cumulus. I allowed altitude change to go unnoticed to 9800 ft. Controller advised me we had agreed on 9000 ft. Previously, asked for higher to clear turbulence in building cumulus. Conditions were turbulent, moderate to severe, with vertical wind shear. Corrected immediately to 9000 ft.
Original NASA ASRS Text
Title: PLT OF BE35 ON IFR CLB ENCOUNTERS BUILDING CUMULUS AND VERT WIND SHEAR WHICH RESULTS IN ALTDEV.
Narrative: ASSIGNED 9000 FT IN CTL AREA, IFR IN BUILDING CUMULUS. I ALLOWED ALT CHANGE TO GO UNNOTICED TO 9800 FT. CTLR ADVISED ME WE HAD AGREED ON 9000 FT. PREVIOUSLY, ASKED FOR HIGHER TO CLR TURB IN BUILDING CUMULUS. CONDITIONS WERE TURBULENT, MODERATE TO SEVERE, WITH VERT WIND SHEAR. CORRECTED IMMEDIATELY TO 9000 FT.
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.