Ferrari wants clarification from the FIA over Sebastian Vettel's overtaking move on Jean-Eric Vergne at the Brazilian Grand Prix.
Prior to explanations from the FIA on Thursday that Vettel's pass of Vergne took place immediately after a green flag signal, Ferrari team principal Stefano Domenicali wrote a letter to FIA president Jean Todt on Wednesday night seeking a detailed explanation of the circumstances surrounding the incident on lap four.
The team wants confirmation that Vettel's pass did not take place under yellow flag conditions, as video evidence that has been widely distributed since the weekend did not provide a clear answer.
Although there had been talk that Ferrari could protest the result of the championship, such a scenario is thought to be highly unlikely.
A spokesman for Ferrari said: "We are seeking clarification about the overtaking move."
Ferrari's Fernando Alonso lost the world championship by just three points to Vettel after the season finale in Brazil.