Turbulence Blamed in Viscount Breakup
About 1613, May 12, 1959, Capital Airlines Flight 75 disintegrated in flight over an area near Chase, Md. All occupants, four crew and 27 passengers, were killed. The aircraft, a Vickers-Armstrongs Viscount, N 7463, was destroyed. From all of the available evidence the Board believes that the in-flight disintegration was caused by aerodynamic loads imposed on the aircraft which exceeded its design strength and which were generated by an excessive airspeed combined with turbulence and maneuvering loads (AW Nov. 2, p. 30).