Sandy Dahl, widow to United Flight 93 pilot Jason Dahl, whose plane went down in a Pennsylvania field on 9/11, passed away from natural causes at the age of 52 The Denver Post reports that Dahl passed away in her sleep on Friday night, according to family friend David Dosch. She was best known for channeling the tragedy of her husband’s death on September 11, 2001 into a campaign, which honored his memory and also instigated the Captain Jason M. Dahl Scholarship Fund for new pilots.