PPRuNe Forums - View Single Post - 1.5 Factor Of Safety - FAR 25.303
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Old 28th Jun 2014, 14:39
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Bill Serger
 
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Yes, I understand. And in fact these are not my mistakes, rather they are the mistakes made by someone with which I have been having a discussion.

Basically, they are asserting that FAR 25.301, 303, and 305 regulate speeds as loads. And that the 1.5 safety factor defined under 25.303 pertains to speeds.

I have kept trying to tell them that the loads defined in FAR 25.301, 303 and 305 are not speeds, and are good up to Vd, which is defined in FAR 25.305.

For example, there isn't any margin of safety covering a Transport Category aircraft which is accelerating through Vd+50 while pulling 2-3.8 G's (limit load + 1.5 factor of safety).

The person I am having this discussion with seems to think such a maneuver is covered by FAR 25.301, 303, and 305.
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