redlined

adj

1. (not-comparable)Marked with a red line to denote that it is unfit or unsafe for flight.

   “[Female pilots] were forbidden to ferry aircraft overseas and, in the Civilian Air Patrol, on coastal patrols in the name of protecting our women, but were allowed to fly red lined aircraft that the men wouldn't fly.”

verb

1. (form-of, participle, past)simple past and past participle of redline