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Old 23rd Jul 2012, 14:45
  #43 (permalink)  
Join Date: Feb 2005
Location: flyover country USA
Age: 77
Posts: 4,580
There were at least two Stearman accidents - one during practice near Rockford Illinois (Rolly Cole 1963), and one at Valparaiso Indiana (Bill Adams 1966?) which involved the R-985 crankshaft breaking, allowing the prop to tear off most of the wing structure on one side.

In the latter case, and probably the former too, a triple snap roll was performed - brutal on man and machine. The poor P&W engineers must have never envisioned such gyro loads on their hardware.
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