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777 ball park figures and rules of thumb
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22nd February 2010 | 19:11
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kijangnim
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Greetings
Approach N1 = ((landing weight+ 400)-55)/10
landing weight = 210 Tons => 210+400=600 -55 = 545 /10 = N1 54.5 with Gear Down and Landing Flaps
, well you might think that it is quicker to lookup in the QRH unreliable speed
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