Former Boeing CEO Dennis Muilenburg had to be fired in order for the 737 Max jet to receive regulatory approval, CNBC’s Jim Cramer said Monday.

“It was impossible to get clearance with all these different entities as long as he was there because he presided over what happened,” Cramer said on “Squawk on the Street.”

Boeing announced Muilenburg’s firing Monday morning as the Chicago-based aviation giant struggled to regain the trust of regulators who need to certify the 737 Max.

Chairman David Calhoun will become the manufacturer’s new CEO on Jan. 13. The transition period will allow him to exit his non-Boeing commitments. CFO Greg Smith will serve as interim chief executive.

The 737 Max has been grounded worldwide since March after two of them crashed — one in October 2018 and the other in March — killing 346 people in total. The Max’s malfunctioning flight-control system has been implicated in the disasters.

Boeing has for months been eyeing certification by the end of 2019 and in late November it still believed the plane could return to commercial service by the end of January.

But the Federal Aviation Administration has repeatedly said it will take all the time it needs to deem the 737 Max safe.

And over the weekend, the New York Times reported on a recent tense, face-to-face meeting in which the head of the FAA, Stephen Dickson, criticized Muilenburg for putting public pressure on the agency to certify the jet.

Muilenburg also faced intense scrutiny earlier this fall during congressional testimony, which Cramer called a “disaster.”

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“You simply had to get Muilenburg out to get this process going,” Cramer said. “I don’t think anybody wanted to deal with him.”

The “Mad Money” host said he had been wondering when accountability at Boeing over the fatal crashes would reach the top echelon of the company.

“Someone had to pay the price and it has to be him,” Cramer said, adding he thought Calhoun, a former General Electric executive, is a strong replacement for Muilenburg.

Under Calhoun’s leadership, Cramer said he thought the process to regain regulatory approval would be accelerated.

“This plane is going to be in the air someday. But I just don’t think Dennis was going to get it to the promise land,” Cramer said.

Shares of Boeing were up more than 2% on the news, trading around $336.

– CNBC’s Leslie Josephs and Amelia Lucas contributed to this report.