Sam Michael, Technical Director: After a couple of setup runs this morning we had a problem with the KERS onboard cooling system. We had to stop and remove some components to ensure the car was safe, and that cost us three hours. In the afternoon we made good progress with the aero setup of the FW33 on long runs, with Rubens generating some good data for the wind tunnel.

AT&T Williams will be back on track tomorrow, Sunday 13 February, with Rubens Barrichello continuing to drive the FW33 for the final day of the test.

Driver Rubens Barrichello
Chassis / engine
FW33-01 / CA320
Jerez de la Frontera 4.428km
Setup work and long runs
Dry and sunny all day
Ambient & track temps
20ºC / 26ºC