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Guest kjolsnes

How do I figure out take off flaps setting?

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Guest kjolsnes

Gents,What are the steps I need to take to figure out if I should use 5,10 or more flaps for the take off?Have found pieces of info around but could anyone give me the details for a 747-400, how you could determine this?Thanks in advance.Kjetil ONorway

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Kjetil,Not sure how it's done IRL. I usually go for 20 on a normal/heavy loaded aircraft and use 10 when it's really light. Also, whenever possible, I use derated thrust for takeoffs and climbs to keep the engines durable for a longer time (I suppose as they do it IRL).So even if the aircarft is not fully loaded, I tend to use Flaps20 as it gives me lower V1, VR, V2, and eventually helps compensating derated thrust.Cheers,


Balint Nagy
 

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Guest alexhn

Usually T/O flap setting is determined by company Standard Operating Procedure. I think most use flap 20.

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