The aeroplane builder said it is booking the charge to cover possible compensation to airlines that had to cancel thousands of flights since regulators grounded the Boeing 737 Max fleet.
Acting head of US Federal Aviation Administration Daniel Elwell says, "We can't be driven by some arbitrary timeline."
The FAA is meeting with more than 30 international air regulators including China, the EU, Brazil and Canada on Thursday to discuss a software fix and new pilot training that Boeing has been developing to ensure the jets are safe to fly.
Boeing says the changes will ensure that the simulator experience is representative across different flight conditions and will improve the simulation of force loads on the manual trim wheel that helps control the airplane.
A Reuters poll shows people are not familiar with airplane crashes in Indonesia and Ethiopia and are more concerned with ticket prices when they choose an airline.
The plane carrying 143 people including crew members, crashed into the St. Johns River at the end of the runway at Naval Air Station Jacksonville injuring 21 people.
Muilenburg said Boeing followed the same design and certification process it has always used and denied that the MAX was rushed to market. He said he would not resign, and left a press conference as reporters peppered him with questions.
The aviation giant announced on Wednesday it has suffered $1 billion after two deadly Boeing 737 MAX crashes. The company officials said they need to win back consumers' trust again.
A preliminary report issued by the Ethiopian transport ministry cast further doubt on the system controlling the Boeing 737 MAX 8 model, which has been grounded worldwide since almost a month.
The Wall Street Journal reports that the pilots of the ill-fated Ethiopian Airlines flight followed all the emergency procedures laid out by Boeing but could not control the aircraft.
Boeing's MCAS anti-stall system, which was implicated in the October crash of a 737 MAX 8 airliner in Indonesia, was also activated shortly before a recent accident in Ethiopia, sources are reporting.
Family of Jackson Musoni, a citizen of Rwanda who died in the Ethiopian Airlines 737 MAX crash, file a lawsuit against Boeing Co in US federal court.
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