United Airlines CEO Scott Kirby said in a CNBC interview on Tuesday the company was going to build a fleet plan that does not include Boeing’s 737 MAX 10 jets, citing delivery delays.

In the best case scenario, MAX 10 deliveries are five years behind their original delivery date, Kirby added. United in 2021 placed orders for 150 MAX 10s.

“I think the MAX 9 grounding is probably the straw that broke the camel’s back for us,” Kirby said in an interview with CNBC’s Squawk Box on Tuesday.

Reuters release