Former high-level Boeing managers and engineers have issued startling warnings for flyers to avoid the airplane giant's troubled 737 MAX 9 jets as the model once again takes to the skies.

"I would absolutely not fly a MAX airplane," one-time senior Boeing manager Ed Pierson bluntly told the Los Angeles Times of the model that recently saw a door plug blow out in midair on an Alaska Airlines flight.

"I've worked in the factory where they were built, and I saw the pressure employees were under to rush the planes out the door."

Joe Jacobsen, a former Boeing engineer who has also worked at the Federal Aviation Administration (FAA), gave a similar warning, saying it was "premature" for airlines, including Alaska, to have resumed flying the jets.

"I would tell my family to avoid the MAX," Jacobsen told the LA Times, claiming that his time at the company made him realize that profits were prioritized over quality control.

"I would tell everyone, really."

Ed Pierson, a former senior manager at Boeing, said he "would absolutely not fly a MAX airplane." KIRO 7 News

Boeing's planes were temporarily grounded for a federal inspection earlier this month after an Alaska Airlines plane was forced to make an emergency landing when a section blew out in mid-flight — whipping the shirt off a young passenger.

President and CEO David Calhoun admitted days later that a "quality escape" had occurred, telling employees: "This event can never happen again."

On Wednesday, he emailed employees, conceding that "scrutiny" from the accident "makes it absolutely clear that we have more work to do" to "strengthen our safety and quality processes."