How often does that happen?
From Sofia Morning News (http://www.novinite.com/view_news.php?id=57182)
Turbulence Shakes Madrid-Sofia Plane, 2 Hurt
Politics: 29 December 2005, Thursday.
A Bulgaria Air plane has hit a turbulence field Wednesday night as it flew from Madrid to Sofia.
A steward's leg was broken during the shaking, and a woman suffered arm fracture. They received first aid while on board and after the plane landed in Sofia the two were immediately transported to the Military Medical Hospital.
The Boeing 737-500 hit a turbulence field above Italy's Adriatic zone. The passengers were stressed, but the board staff had the situation under control and did not allow panic or chaos, reports said Thursday.
The plane travelling from Madrid to Sofia had 100 passengers on board and landed safely in Sofia after the accident.
The injured steward is still at hospital, local Darik radio said Thursday, disclosing that the other injured person has already been let out.