A technical problem with the medical helicopter at the Circuit of The Americas was the cause of the red flag during Friday's morning's interrupted first practice session, the FIA has said.With the opening session of action already delayed for 40 minutes because fog had prevented the helicopter from taking off,...

The final free practice session for the Indian Grand Prix has been delayed and shortened because of visibility problems.Shortly before the scheduled 11am start of the one-hour session, race organisers announced that there would be a 15-minute delay because of morning mist shrouding the Buddh International Circuit.This meant that the...