Narrative:

We encountered clear air turbulence, no warning was apparent by sigmets, PIREPS or by our on board radar. No thunderstorms were being depicted by radar. We had an instantaneous altitude deviation of -300 ft, then +300 ft, and a +20 KTS. The seat belt sign was illuminated at the time. Those passenger who did not have their seat belts fastened were tossed into the overhead. Cabin crew-F/a's were also bounced around. Minor injuries occurred to approximately 20 passenger and all 7 cabin crew members. The encounter lasted 5 seconds. No damage was done to the aircraft and we continued on to sju under normal operations.

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Original NASA ASRS Text

Title: HVT ENCOUNTERED CLEAR AIR TURBULENCE AT CRUISE ALT OF FL330. PASSENGERS AND FA'S INJURED.

Narrative: WE ENCOUNTERED CLEAR AIR TURB, NO WARNING WAS APPARENT BY SIGMETS, PIREPS OR BY OUR ON BOARD RADAR. NO TSTMS WERE BEING DEPICTED BY RADAR. WE HAD AN INSTANTANEOUS ALT DEVIATION OF -300 FT, THEN +300 FT, AND A +20 KTS. THE SEAT BELT SIGN WAS ILLUMINATED AT THE TIME. THOSE PAX WHO DID NOT HAVE THEIR SEAT BELTS FASTENED WERE TOSSED INTO THE OVERHEAD. CABIN CREW-F/A'S WERE ALSO BOUNCED AROUND. MINOR INJURIES OCCURRED TO APPROX 20 PAX AND ALL 7 CABIN CREW MEMBERS. THE ENCOUNTER LASTED 5 SECS. NO DAMAGE WAS DONE TO THE ACFT AND WE CONTINUED ON TO SJU UNDER NORMAL OPS.

Data retrieved from NASA's ASRS site as of August 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.