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A BE36 pilot suffered loss of his gyro and HSI in turbulence and experienced an upset. He had some difficulty with partial panel control until the gyros came back on line.
| Attributes | |
| ACN | 832791 |
| Time | |
| Date | 200904 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Bonanza 36 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Attitude |
| Person 1 | |
| Function | Pilot Flying Single Pilot |
| Qualification | Flight Crew Private |
| Experience | Flight Crew Last 90 Days 30 Flight Crew Total 1400 Flight Crew Type 1000 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Inflight Event / Encounter Weather / Turbulence Inflight Event / Encounter Loss Of Aircraft Control |
Narrative:
In cruise at 8;000 ft; IMC; I encountered severe turbulence. Turbulence caused autopilot disconnect and aircraft upset. Following upset gyros inoperative; HSI inoperative; altitude indicator inoperative; no loss of primary electrical power or vacuum. Encountered difficulty in partial panel maneuvers and maintaining directional control. Landed short of planned destination. At the suggestion of ATC; went into maintenance. Maintenance checked aircraft and found no anomalies. Subsequent flight test ok. I suspect the severe turbulence upset the gyros. After sufficient time; they recovered and operation was normal. A factor in this incident was partial panel control in turbulent IMC.
Original NASA ASRS Text
Title: A BE36 pilot suffered loss of his gyro and HSI in turbulence and experienced an upset. He had some difficulty with partial panel control until the gyros came back on line.
Narrative: In cruise at 8;000 FT; IMC; I encountered severe turbulence. Turbulence caused autopilot disconnect and aircraft upset. Following upset gyros inoperative; HSI inoperative; altitude indicator inoperative; no loss of primary electrical power or vacuum. Encountered difficulty in partial panel maneuvers and maintaining directional control. Landed short of planned destination. At the suggestion of ATC; went into Maintenance. Maintenance checked aircraft and found no anomalies. Subsequent flight test OK. I suspect the severe turbulence upset the gyros. After sufficient time; they recovered and operation was normal. A factor in this incident was partial panel control in turbulent IMC.
Data retrieved from NASA's ASRS site as of April 2012 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.