Capital Airlines Flight 300

On May 20, 1958, a Vickers Viscount airliner operating Capital Airlines Flight 300 was involved in a mid-air collision with a United States Air Force Lockheed T-33 jet trainer on a proficiency flight in the skies above Brunswick, Maryland. All 11 people on board the Viscount and one of the two crew in the T-33 were killed in the accident.

Source: Wikipedia — Capital Airlines Flight 300 (CC BY-SA 4.0)