The Latest Breaking News from Jennifer Homendy

Passengers remained surprisingly calm after an Alaska Airlines flight had part of its fuselage blow out three miles above Oregon

About 170 planes were grounded after the "door plug" on a Boeing 737 Max 9 blew out on an Alaska Airlines flight. United and Alaska are the two big U.S. carriers that fly Boeing jets with door plugs.

The device was discovered by residents close to where the incident occurred.

A federal official says the Boeing jetliner that suffered an inflight blowout over Portland, Oregon, was not being used for flights to Hawaii after a warning light that could have indicated a pressurization problem lit up on three different flights

Parts supplier Spirit AeroSystems also affected after US regulators ground 737 Max 9s with door plugs

The auto pressurization light came on during three recent flights involving the same plane, the National Transportation Safety Board said. Some plane components are being sent to an NTSB lab.

The Boeing jetliner that suffered an inflight blowout over Oregon was not being used for flights to Hawaii after a warning light that could have indicated a pressurization problem lit up on three different flights, a federal official said Sunday.

It is not clear if the pressurisation warnings were related to Friday's incident, which saw a plug door torn from the plane

Door plug on left side of Alaska Airlines jet tears off after takeoff from Portland, Oregon, en route to Ontario, California

Few people thought much about “plugs” that seal unused exits on planes until one of them failed and blew a hole in an Alaska Airlines jet

An emergency landing by an Alaska Airlines jetliner has prompted U.S. federal authorities to ground some Boeing 737 Max aircraft, adding another episode to the troubled history of Boeing’s Max lineup of jets