Narrative:

We were flying northbound on amben 300 and were approximately 120 NM south of champ when we encountered severe turbulence while deviating around a thunderstorm. At the time we were at FL350, .78 mach, with seat belt/no smoking sign on, they had been on for 45 mins before the incident occurred, engine anti-ice and continuous ignition on. Autoplt was engaged in command I and altitude hold. The radar was on and on both the 30 and 60 mi scale no WX was observed to the right. We encountered turbulence which displaced us from our altitude approximately 1000 ft above and below our altitude. The event lasted approximately 30-40 seconds after which we returned to our assigned altitude of FL350. We sustained injuries to 4 flight attendants and 8 passenger. All injuries occurred in last 6 rows of coach and aft galley. Passenger injuries were possibly due to unfastened seat belts and 1 passenger was coming out of lavatory. Flight attendants were in aft galley with carts out of their storage bins.

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Original NASA ASRS Text

Title: ACR WDB HIT THE EDGE OF TSTM ACTIVITY CAUSING ALT DEV PLUS 1000 FT AND MINUS 1000 FT AND INJURY TO BOTH PAX AND CABIN ATTENDANTS.

Narrative: WE WERE FLYING NBOUND ON AMBEN 300 AND WERE APPROX 120 NM S OF CHAMP WHEN WE ENCOUNTERED SEVERE TURB WHILE DEVIATING AROUND A TSTM. AT THE TIME WE WERE AT FL350, .78 MACH, WITH SEAT BELT/NO SMOKING SIGN ON, THEY HAD BEEN ON FOR 45 MINS BEFORE THE INCIDENT OCCURRED, ENG ANTI-ICE AND CONTINUOUS IGNITION ON. AUTOPLT WAS ENGAGED IN COMMAND I AND ALT HOLD. THE RADAR WAS ON AND ON BOTH THE 30 AND 60 MI SCALE NO WX WAS OBSERVED TO THE R. WE ENCOUNTERED TURB WHICH DISPLACED US FROM OUR ALT APPROX 1000 FT ABOVE AND BELOW OUR ALT. THE EVENT LASTED APPROX 30-40 SECONDS AFTER WHICH WE RETURNED TO OUR ASSIGNED ALT OF FL350. WE SUSTAINED INJURIES TO 4 FLT ATTENDANTS AND 8 PAX. ALL INJURIES OCCURRED IN LAST 6 ROWS OF COACH AND AFT GALLEY. PAX INJURIES WERE POSSIBLY DUE TO UNFASTENED SEAT BELTS AND 1 PAX WAS COMING OUT OF LAVATORY. FLT ATTENDANTS WERE IN AFT GALLEY WITH CARTS OUT OF THEIR STORAGE BINS.

Data retrieved from NASA's ASRS site as of July 2007 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.