Narrative:

We were climbing out of sfo, en route to jfk, and encountered wake turbulence from a preceding flight, which caused a flight attendant to hit her wrist against a service cart, injuring it. Previous to the wake turbulence encounter, we were in smooth air. The encounter lasted approximately 5 seconds and we were once again in smooth air. This type of event is difficult to predict and/or prevent.

Google
 

Original NASA ASRS Text

Title: PLT RPT, B767, SFO-JFK. SUDDEN WAKE TURB CLBING OUT OF SFO AT FL320. CABIN ATTENDANT INJURED.

Narrative: WE WERE CLBING OUT OF SFO, ENRTE TO JFK, AND ENCOUNTERED WAKE TURB FROM A PRECEDING FLT, WHICH CAUSED A FLT ATTENDANT TO HIT HER WRIST AGAINST A SVC CART, INJURING IT. PREVIOUS TO THE WAKE TURB ENCOUNTER, WE WERE IN SMOOTH AIR. THE ENCOUNTER LASTED APPROX 5 SECONDS AND WE WERE ONCE AGAIN IN SMOOTH AIR. THIS TYPE OF EVENT IS DIFFICULT TO PREDICT AND/OR PREVENT.

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.