The carrier has slashed its expected growth rate for summer 2020 from 7% to 3%.
It is likely to delay the plane’s return to flying.
Kevin McAllister addressed recent tragedies in Indonesia and Ethiopia ahead of the Paris Air Show.
A chartered jet from the Guantamo base in Cuba tried to land in a thunderstorm in north Florida and ended up in the river.
Boeing shareholders are meeting six months to the day since the first of two deadly crashes involving the company's 737 Max airliner.
The aircraft remains grounded after two deadly crashes.
Boeing already suspended deliveries of the Max last month.
Authorities say they will issue death certificates within two weeks.
Boeing grounds entire global fleet of 737 Max aircrafts
The plane has been barred from operating in the skies over Europe following the crash in Ethiopia.