Boeing will take up to a year to repair an engine issue on all its beleaguered 737 Max jets, which will delay the certification of its 737 Max 7s and Max 10s.

Boeing has acquired a team of experts to “quickly drive forward a safe and compliant solution” to a glitch that could cause the 737 Max anti-ice system to overheat and damage the engine, the corporation wrote in response to questions from Sen. Tammy Duckworth (D-Illinois), according to CBS News.