McLaren team principal Andreas Seidl has made it clear that McLaren will initiate action if their rivals continue to run felxi-wings at this weekend's Azerbaijan GP.
New tougher tests on bendy wings will be introduced after Sunday's race in Baku which McLaren and Mercedes have been particularly unhappy about due to the performance advantage of the flexi-wings which is expected to be significant in Azerbaijan.
"From our point of view, if we see deflections again like we have seen in Barcelona, there needs to be action here this weekend," Seidl told RacingNews365.com and other select members of the press. "How this action will look like in the paddock, I don't know yet."
"We're happy with all the actions FIA has put in place with the technical directive, even with the update of the technical directive.
"The only thing we are still not happy with, and that's the point of the discussion, is why do you let teams that benefited already for several races, with a car that has not been in the regulations, to keep using these devices."
Seidl thinks that the FIA should look at the consequences of running a flexi-wing rather than simply testing the rigidness.
"It is not just the deflection that you see, but in the end what is important is for the FIA to look into how does this deflection get created," said Seidl.
"If this deflection gets created by a design that is clearly done for passing the test which is in the regulations, then is creating excessive deflection, on purpose, that's obviously not within 3.8 [the regulations that ban moveable aerodynamic devices]."
Seidl also revealed that if McLaren make a protest, it will not happen until Saturday at the earliest due to teams often changing rear wings on Friday night prior to the final practice session.
"I don't want to go into discussion of a protest at the moment," said Seidl. "In general, it doesn't make sense to do anything before the event, because you can change a rear wing on Saturday morning.
"There's no point to do anything on a Friday night."