The well-known German website Auto Motor und Sport reported the news that components of the Ferrari fuel system and two other teams, one powered by Maranello and one not, they would be from the FIA for comparative studies.
Components of the Ferrari fuel system analyzed
Ferrari left Interlagos disappointed. The collision between the two pilots is the worst incident for any team. Until the catastrophic contact Ferrari was on the podium. […]
Team Principal Mattia Binotto saw a parallel to Mexico, where Ferrari had only the third fastest car in the race, but at least not as desperate as at the US GP. However, the opponents saw this as further proof that something has changed in the Ferrari since the FIA issued the technical notice on possible engine irregularities.
Of course Ferrari denies this. […] but the advantage was not as obvious as it was two races ago. Compared to Red Bull Honda, it has reduced the margin at full throttle to 0.15 seconds […]. Red Bull had declared in Brazil not to protest against Ferrari. […] The problem is not solved yet. Now the FIA has suddenly accelerated. After the Federation had long thought that those who had doubts should protest if they wanted an analysis of the red cars, it now seems that they only want to sweep those voices clean. They would only poison the climate in the paddock.
For this reason, the FIA commissioners in Brazil appear to have taken fuel system components with three cars. A Ferrari, another Ferrari team and a non-Ferrari. So you can make comparisons. In particular, the fuel connections between the flow meter and the endothermic engine are to be observed. […] The result would be the injection of a larger amount of gas than legally permitted.
The study will be conducted in the FIA laboratories and will probably take a few days. If we do not hear anything until the season finale in Abu Dhabi, we have to assume that everything went well.
Michael Schmidt, Auto Motor and Sport, November 20, 2019