777 flap speeds

I’m wandering what is the optimum speeds in the 777 to start extending the flaps for landing

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See the following excerpt from DeerCrusher’s 777 Family guide for speed limitations. In his topic, linked below, he also includes various details about when to extend the flaps for optimum performance.

Flaps

For reference the flap and various limitations for each setting are listed below. These can also be found in the cockpit of the 777 near the gear lever.

Flaps Speed Limitation
1 255 kts
5 235 kts
15 215kts
20 195 kts
25 185 kts
30 170 kts

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