DALLAS (AP) - Federal safety officials are reviewing operations at Allegiant Air two years ahead of schedule, spurred by incidents including an aborted takeoff and a plane that landed low on fuel.

The Federal Aviation Administration routinely evaluates airlines every five years but moved up Allegiant's review from 2018.

An FAA spokesman says that the agency is making sure that work Allegiant is doing "to address various internal issues has resulted in the desired improvements."

The review began in early April and is expected to run through June.

Allegiant said in a statement that it welcomed the review and FAA feedback.