Boeing's boss has released a video message and open letter addressed to "airlines, passengers and the aviation community" in an attempt to provide reassurance after two crashes in five months involving its 737 Max planes.
More than 300 Boeing 737 MAX 8 and MAX 9 passenger jets have been grounded worldwide after two fatal crashes in the past five months in Ethiopia and Indonesia killed almost 350 people.
Federal prosecutors are scrutinizing the development of Boeing Co's 737 MAX jetliners which have been involved in two fatal crashes since October, a person briefed on the matter confirmed late Monday.
"Unlike France, where criminal investigations into aviation accidents seems common, it is very, very rare in the US", Hamilton added.
After a 10 percent drop last week that wiped almost $25 billion off its market share, Boeing stock slid about 1.8 percent on Monday.
"Safety is at the core of who we are at Boeing, and ensuring safe and reliable travel on our airplanes is an enduring value and our absolute commitment to everyone", Muilenburg said.
WestJet Airlines - Canada's second-largest scheduled airline after Air Canada - said Tuesday that it had accommodated more than 65,000 passengers that had been booked on its 13 Boeing 737 Max 8s through to the end of April.
Under scrutiny is a new automated system in the 737 MAX model that guides the nose lower to avoid stalling, while Boeing has raised questions in the Lion Air case about whether crew used the correct procedures.
The FAA finds itself in the hot seat, especially over its decision to certify the 737 MAX without demanding additional training.
- Sources with knowledge of the doomed Lion Air cockpit voice recorder revealed how pilots scoured a manual in a losing battle to figure out why they were hurtling down to sea. The goal is to save on costs related to retraining pilots about the systems used in new models.
FAA-accredited Boeing employees notably certified the MCAS system, sources say. But the agency was not able to describe any changes in the plane implemented by Boeing after the Lion Air accident.
Critics say the aviation regulator has been too soft on Boeing, a major player in the American export economy whose planes are also at issue in the current US-China trade talks.
The 2012 investigation also found that many FAA employees said they'd faced retaliation for speaking up.