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A319 flight crew reported loss of aircraft control upon encountering an area of severe turbulence.
| Attributes | |
| ACN | 1519595 |
| Time | |
| Date | 201802 |
| Environment | |
| Flight Conditions | IMC |
| Aircraft 1 | |
| Make Model Name | A319 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Flight Plan | IFR |
| Person 1 | |
| Function | First Officer Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Type 439 |
| Events | |
| Anomaly | Deviation - Altitude Excursion From Assigned Altitude Inflight Event / Encounter Weather / Turbulence Inflight Event / Encounter Loss Of Aircraft Control |
Narrative:
During our descent from FL260 to FL200 our aircraft encountered severe up and down drafts and aggressive bumps and jolts. Rate of descent was approximately 8;200 ft per minute for several seconds. Autopilot and auto thrust were immediately turned off to avoid exceeding vmo/mmo (maximum operating speed). Speed was maintained between .74 and .78 mach. The aircraft then began an uncontrolled climb at approximately +1400 ft per minute. ATC was notified; flight attendants were given the take your jump seats immediately command; and we were told to do what we needed to do to get out of the situation by ATC. We then leveled at FL210 above the cloud deck; then continued to climb to FL240 to clear higher clouds ahead of us. After a few minutes of smooth air we advised the flight attendants to check in and made a PA to the passengers. No injuries were reported. A maintenance log was created for the event.
Original NASA ASRS Text
Title: A319 flight crew reported loss of aircraft control upon encountering an area of severe turbulence.
Narrative: During our descent from FL260 to FL200 our aircraft encountered severe up and down drafts and aggressive bumps and jolts. Rate of descent was approximately 8;200 ft per minute for several seconds. Autopilot and auto thrust were immediately turned off to avoid exceeding VMO/MMO (Maximum Operating Speed). Speed was maintained between .74 and .78 Mach. The aircraft then began an uncontrolled climb at approximately +1400 ft per minute. ATC was notified; flight attendants were given the take your jump seats immediately command; and we were told to do what we needed to do to get out of the situation by ATC. We then leveled at FL210 above the cloud deck; then continued to climb to FL240 to clear higher clouds ahead of us. After a few minutes of smooth air we advised the flight attendants to check in and made a PA to the passengers. No injuries were reported. A maintenance log was created for the event.
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.