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A B747-400 over the pacific encountered severe turbulence resulting in injuries to several flight attendants. The seat belt sign was on at the time.
| Attributes | |
| ACN | 810707 |
| Time | |
| Date | 200811 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 34000 |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B747-400 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Route In Use | enroute : pacific |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Experience | flight time last 90 days : 180 flight time total : 21000 flight time type : 4100 |
| ASRS Report | 810707 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Experience | flight time last 90 days : 240 flight time total : 20000 flight time type : 9700 |
| ASRS Report | 810706 |
| Events | |
| Anomaly | inflight encounter : turbulence |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : unable |
| Consequence | other |
| Supplementary | |
| Problem Areas | Weather |
| Primary Problem | Weather |
Narrative:
While cruising at FL340 we encountered continuous light chop. I turned the seat belt sign on; made an announcement; and then immediately made another announcement seating the flight attendants. Approximately 1-2 mins later we experienced severe turbulence lasting approximately 5 seconds. After about another min or so of continuous light turbulence we encountered another 5 seconds or so of severe turbulence. After that the ride improved significantly; and smoothed out in about 10 mins. Several flight attendants were injured; mostly in the flight attendant crew rest facility; and 4 passenger were injured: among them; one was in the lavatory and hit her head and cut her leg; another was struck by a carryon bag that fell out of the overhead bin.
Original NASA ASRS Text
Title: A B747-400 OVER THE PACIFIC ENCOUNTERED SEVERE TURBULENCE RESULTING IN INJURIES TO SEVERAL FLIGHT ATTENDANTS. THE SEAT BELT SIGN WAS ON AT THE TIME.
Narrative: WHILE CRUISING AT FL340 WE ENCOUNTERED CONTINUOUS LIGHT CHOP. I TURNED THE SEAT BELT SIGN ON; MADE AN ANNOUNCEMENT; AND THEN IMMEDIATELY MADE ANOTHER ANNOUNCEMENT SEATING THE FLT ATTENDANTS. APPROX 1-2 MINS LATER WE EXPERIENCED SEVERE TURB LASTING APPROX 5 SECONDS. AFTER ABOUT ANOTHER MIN OR SO OF CONTINUOUS LIGHT TURB WE ENCOUNTERED ANOTHER 5 SECONDS OR SO OF SEVERE TURB. AFTER THAT THE RIDE IMPROVED SIGNIFICANTLY; AND SMOOTHED OUT IN ABOUT 10 MINS. SEVERAL FLT ATTENDANTS WERE INJURED; MOSTLY IN THE FLT ATTENDANT CREW REST FACILITY; AND 4 PAX WERE INJURED: AMONG THEM; ONE WAS IN THE LAVATORY AND HIT HER HEAD AND CUT HER LEG; ANOTHER WAS STRUCK BY A CARRYON BAG THAT FELL OUT OF THE OVERHEAD BIN.
Data retrieved from NASA's ASRS site as of May 2009 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.