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Vladtop

Optimum Cruise Altitude

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Hello! I have one more question. Before I asked about approach attitude. Now I have to note my observations for Optimum cruise altitude. So, flight URSS-DAAG. Boeing 737-800. Abt 1800 NM. 17 tonns of fuel, 4 tonns of cargo and 147 passangers.Gross Weight = 74.0 tonns : fc451bca0aba.jpg Ok. TSO914 climbing FL360... Reached FL360. Optimum altitude and TAT: fd7444c5f628.jpg Gross weight: 209b14760608.jpg FCOM: [e7281130c626.jpg Difference is 1800 ft - too mach. Who is wrong? Please check it.

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Is that table for a 738 with or without winglets? That could be the difference you're seeing


Kenneth Weir

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Is that table for a 738 with or without winglets? That could be the difference you're seeing
Are you shore? Almost 2000 feet?

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Maybe im wrong but could it be because the cost index is so high?


Dmitriy Kotov

If it is not IFR conditions it is not fun.

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Have you tried pressing the LRC button on the crz page and check those numbers, because thats ECON cruise on the fmc you have there and the table is Long Range Cruise.

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Have you tried pressing the LRC button on the crz page and check those numbers, because thats ECON cruise on the fmc you have there and the table is Long Range Cruise.
I have pressed.

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are u sure its long range cruise? because if the FMC was in LRC mode, then it should show ECON in pic number 2 abeam the 6L line select key


Bryan Richards

 

"People depend so much on automation that they forget how to get the automation to work." B.W.

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