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Learjet 60 first officer reported an encounter with severe turbulence at FL400 resulted in an uncommanded 45 degree bank and loss of 3300 ft.
| Attributes | |
| ACN | 1451231 |
| Time | |
| Date | 201705 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZJX.ARTCC |
| State Reference | FL |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Learjet 60 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Cruise |
| Route In Use | Direct Oceanic |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Weather Radar |
| Person 1 | |
| Function | First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Instructor Flight Crew Multiengine |
| Experience | Flight Crew Last 90 Days 30 Flight Crew Total 8500 Flight Crew Type 2500 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Altitude Excursion From Assigned Altitude Inflight Event / Encounter Loss Of Aircraft Control Inflight Event / Encounter Weather / Turbulence |
Narrative:
Over the gulf of mexico we encountered severe turbulence. Our radar was working on departure but failed at some point prior to the encounter. When we noticed the radar inop; we asked ZJX center for 10 miles right based on our storm scope and ZJX center's radar return. Neither were perfect but all that was available. When the turbulence happened we lost approximately 3;300 ft; bank angle at the most extreme was 45 degrees.
Original NASA ASRS Text
Title: Learjet 60 First Officer reported an encounter with severe turbulence at FL400 resulted in an uncommanded 45 degree bank and loss of 3300 ft.
Narrative: Over the Gulf of Mexico we encountered severe turbulence. Our radar was working on departure but failed at some point prior to the encounter. When we noticed the radar inop; we asked ZJX Center for 10 miles right based on our storm scope and ZJX Center's radar return. Neither were perfect but all that was available. When the turbulence happened we lost approximately 3;300 ft; bank angle at the most extreme was 45 degrees.
Data retrieved from NASA's ASRS site 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.