How two I now what speed to Use when app on autopilot to runway and when to set flaps to 5 degrees?

When i fly b737 or b777 i always does one mistake, by using flap 5 10 nm out airport ils approach- But when does I use 5 degrees flap and what speed to set during descend with app button engage on ils autopilot towards airport. ? i begin 30000 feet descend VS 1800 ils alt 3000 feet from 100 nm away from airport. I push descent 100 nm out. 30 000 to 21000 or 14000 feet.

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Welcome to the community! I would advise using VNAV for descent so you don’t need to calculate TOD and descent rates. For flaps, these topics are helpful:

Use this one for the 777s, the one above is not up to date.

probably 170 knots IAS speed.

Also, as @Mukundan_Srivatsa said, I would use VNAV every time you decend

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Thank u Mukundan_Srivatsa

R u infinite flight Pilot Academy Traineer?

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I don’t think there’s such a thing in Infinite Flight

No I’m just a pilot and ATC controller.

You’re correct. There is no Infinite Flight academy Trainer.

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