From 50 fps turbulence intensity at VC to 90-100 fps turbulence intensity at VC. The amended FAR design criteria was introduced in 1980 or 1981 for commercial airliners. What prompted this change?

  • $\begingroup$ Assuming you're referring to FAR 25.341? $\endgroup$
    – mins
    Jul 26 at 19:31
  • $\begingroup$ I believe so. I've seen the 90 fps design criteria be referenced in documents from 1980 or 1981 at the earliest. I'll try see if I can dig those up later. $\endgroup$ Jul 26 at 21:42

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