American Airlines cancels 737 Max flights though June

American Airlines announced that it will extend the cancellation of flights involving Boeing 737 Max passenger jets through June 5.

The airline said in a statement on Sunday that continuing to ground its 24 Max jets will result in the cancellation of roughly 90 flights a day.

Flights were initially canceled through April 24.

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Canceling flights in advance helps American “provide better service to our customers with availability and re-booking options” and avoid last-minute flight disruptions, the airline said.

The Boeing jets have been grounded worldwide since mid-March in response to two deadly crashes in Ethiopia and Indonesia.

The Federal Aviation Administration said last week that Boeing needs more time to propose a software fix to the maneuvering characteristics augmentation system, which was involved in the crashes, according to preliminary reports.

Boeing has also slowed its production of the jet as it seeks to resolve concerns over it.