Lewis Hamilton says Ferrari's failure to appoint a new permanent race engineer for him ahead of the 2026 Formula 1 season will be "detrimental" to his second campaign with the Italian team.
Ferrari confirmed in January that Riccardo Adami, Hamilton's race engineer for his challenging debut season with the team, was being shifted to another role elsewhere in the organisation.
The team has yet to make any further official statements regarding a replacement, but it is understood that Carlo Santi, who previously worked with Kimi Raikkonen at Ferrari, has been appointed on an interim basis.
Without referring to Santi by name, Hamilton confirmed on Wednesday at pre-season testing in Bahrain that he will be changing race engineer again in the not-too-distant future.
Hamilton said: "It's actually quite a difficult period because it's not long-term, the solution that we currently have, it's only going to be a few races.
"So, early on into the season, it's going to be switching up again, and I'll have to learn to work with someone new, so that's detrimental to a season where you want to arrive with people that have done multiple seasons, have been through thick and thin and are calm.
"But it is the situation that I'm faced with and I'll try to do the best that I can. The team is trying to do the best they can to make it as seamless as possible."
The broadcast of team radio messages throughout Hamilton's first season at Ferrari suggested communication struggles between the seven-time world champion and Adami, but Hamilton said making the change had been a "very difficult" call.
"With Riccardo, it was obviously a very difficult decision to make," Hamilton said.
"I'm really, really grateful for all the effort he put in last year and his patience in what was a difficult year for us all."
Test One: Wednesday 11th, Thursday 12th, Friday 13th February
Test Two: Wednesday 18th, Thursday 19th, Friday 20th February
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