olin Kolles has decided against filing a protest about exhaust blown diffusers in Monaco.
The HRT chief, whose Spanish team is among a rare few in the pitlane not using the sophisticated technology, had issued the protest warning in Barcelona a week ago.
In the AS sports newspaper, reporter Manuel Franco revealed that Kolles wrote a letter to the FIA formalising his warning.
The FIA responded, appealing to Kolles to wait.
"We have been asked to put the matter on hold and wait for the FIA to react," he is quoted as saying in Monaco.
We have been asked to put the matter on hold
AS said the issue will be resolved at the technical working group meeting scheduled for 16 June.
On the track, Hispania had a troubled day amid fears the drivers will struggle to meet the 107pc qualifying rule.
"We have a day to recover from this and will work hard to do so," said Kolles.