Endeavor Air accomplished something no other regional carrier has.

It set—by a long shot—a regional industry record of more than 42 consecutive days of 100 percent completion factor, signaling an operational performance turnaround at Delta’s single wholly-owned regional airline.

For just shy of 1,030 hours during the busiest month of the summer schedule, Endeavor canceled zero flights as a result of maintenance, crew-related issues or other reasons under the carrier’s control. The regional carrier only canceled flights as a result of circumstances beyond its control such as air traffic control restrictions, inclement weather or when slot-constrained airports like those in New York dictate a reduced arrival rate, for example.