The US Senate has passed a $105 billion bill designed to improve safety and customer service for air travelers, a day before the law governing the Federal Aviation Administration expires.

The bipartisan bill, which comes after a series of close calls between planes at the nations airports, aims to boost the number of air traffic controllers amid a shortage, improve safety standards and make it easier for customers to get refunds after flights are delayed or canceled, among other measures.

After passing the legislation on a strong 88-4 vote, the Senate passed a one-week extension to ensure that the law doesnt expire before the House considers the bill next week. The FAA has said it would have had to furlough around 3,600 workers if the law expired at midnight Friday.

The bill stalled for several days this week after senators from Virginia and Maryland objected to a provision that would allow an additional 10 flights a day to and from the heavily trafficked Reagan Washington National Airport. Other senators tried to add unrelated provisions, as well, seeing it as a prime chance to enact their legislative priorities.

But Senate Majority Leader Chuck Schumer called a vote Thursday evening after it became clear that senators would not be able to agree on amendments to the bill before the law expired. The Senate then passed the one-week extension that the House had already passed, sending that to President Joe Bidens desk.(AP)