Four bolts appeared to be missing on a door plug that blew off from a Boeing 737 Max 9 operated by Alaska Airlines, according to a preliminary report from the National Transportation Safety Board.

Initial inspections on grounded Boeing Co. (NYSE: BA) 737 Max ... similar door plugs as inspections get underway to verify their airworthiness. “We’re working to return our Boeing 737 Max ...

A National Transportation Safety Board preliminary report released Tuesday found that a Boeing 737 MAX 9 plane’s door plug had four critical bolts missing before a Jan. 5 blowout. Photo ...

Boeing has replaced the head of its troubled 737 MAX program following an emergency ... quality control issues were also behind the door plug blowout. It said the mid-exit door plug that tore ...

The Boeing Co. door plug panel that blew off during an Alaska ... which originally installed the panel on the Boeing 737 Max 9 fuselage, was not primarily responsible. "The reason the door blew ...

All Boeing 737 Max 9 aircraft with a plug door will remain grounded until the Federal Aviation Administration finds each jet "can safely return to operation," the FAA announced Tuesday.

(AP) — Federal investigators say a door panel slid up before flying ... loose parts in the panels — or door plugs — of some other Boeing 737 Max 9 jets. “Since we began preliminary ...

“The NTSB will be coordinating with the DOJ Fraud Division to provide details about Boeing's recent unauthorized investigative information releases in the 737 MAX 9 door plug investigation ...

Federal investigators say a door panel slid up before flying ... found loose parts in the panels — or door plugs — of some other Boeing 737 Max 9 jets. “Since we began preliminary ...

Given the further delay in inspections of the Boeing 737 Max 9, it’s increasingly unlikely that the aircraft will be able to return to service mid-week. The FAA has paused inspections of Boeing ...