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Does J41 has OPT cruise calculate?

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In 747 and MD11 fms can calculate OPT cruise to keep low flow of fuel. I was try find out this function in J41 but i can't get.... Have any suggest? It's not easy to calculate cruise altitude in J41.

Jia-Hsing Fu

 

ACH0978.jpg

The FMS in the JS41 is very basic, and even the RW unit does not have complex VNAV calculations, such as optimum altitude, profile descents, etc.

Joe Sherrill

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