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A319 flight crew reported an 'aggressive' roll resulted after encountering wake turbulence at FL320 from a crossing A300. A flight attendant hit her head during the encounter.
| Attributes | |
| ACN | 1438755 |
| Time | |
| Date | 201704 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZLC.ARTCC |
| State Reference | UT |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | A319 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | A300 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 160 Flight Crew Type 4185 |
| Person 2 | |
| Function | First Officer Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 70 Flight Crew Type 710 |
| Events | |
| Anomaly | ATC Issue All Types Flight Deck / Cabin / Aircraft Event Illness Inflight Event / Encounter Wake Vortex Encounter |
Narrative:
While at FL320 in completely smooth air we encountered a jolt of moderate turbulence lasting approximately 2 seconds. This was followed by another jolt of turbulence lasting 2-3 seconds that was moderate to more than moderate; but not fitting of the definition of severe in intensity (fom); and about 3-5 seconds after the first encounter. In our vicinity an airplane had just passed in front and above us and was abeam our aircraft when the turbulence was encountered. I immediately suspected a wake encounter. This occurred about 100 miles south-southeast of bil. We asked ATC what kind of aircraft it was and he said his designation was a heavy airbus A300. A flight attendant in the rear of the aircraft reported bumping her head. No other injuries to passengers and crew.
Original NASA ASRS Text
Title: A319 flight crew reported an 'aggressive' roll resulted after encountering wake turbulence at FL320 from a crossing A300. A Flight Attendant hit her head during the encounter.
Narrative: While at FL320 in completely smooth air we encountered a jolt of moderate turbulence lasting approximately 2 seconds. This was followed by another jolt of turbulence lasting 2-3 seconds that was moderate to more than moderate; but not fitting of the definition of severe in intensity (FOM); and about 3-5 seconds after the first encounter. In our vicinity an airplane had just passed in front and above us and was abeam our aircraft when the turbulence was encountered. I immediately suspected a wake encounter. This occurred about 100 miles south-southeast of BIL. We asked ATC what kind of aircraft it was and he said his designation was a Heavy Airbus A300. A flight attendant in the rear of the aircraft reported bumping her head. No other injuries to passengers and crew.
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.