Dany Kvyat has been lapping Jerez with no front wing on the RB11 after he damaged the only example of it in contact with the barrier this morning.
New parts are on their way but the team opted to continue to run a few laps for ongoing systems checks and so on.
“Dany had a very slight off on an install lap this morning, on cold track,” said Christian Horner. “He was just changing something on the steering wheel between Turns Two and Three very lightly touched the tyre wall with the front wing. That’s damaged the front wing.
“It’s the only front wing assembly that we have in Jerez at the moment, which is relatively usual for when you’re not abundant with spare parts. That’s why we’re running without the main plane at the moment. Obviously more components coming down later this afternoon and this evening and during the next few days.
He added: “What I should really be telling you is that we have so much front downforce we don’t need the front wing, and we’re just trying to balance the car.”