Boeing on Thursday published over 100-pages of internal communications as part of the US Federal Aviation Authority (FAA) and Congress’s investigations into issues with the 737 Max.

The planes have been grounded globally last March following two fatal crashes that killed all passengers.

The emails and memos are highly embarrassing for Boeing and likely to lead to more questioning from politicians and regulators.

“This airplane is designed by clowns, who in turn are supervised by monkeys,” a chat message from April 2017 reads. Another message from the same exchange describes working on the plane as “patch[ing] the leaky boat.”

“This is such a shit show,” one employee wrote to another on a chat system in mid-2018.

“Totally,” a colleague replied, “I’ll be shocked if the FAA passes this turd.”