system

10 percent more efficient is a huge deal.

system

I’m curious what happens if a takeoff is attempted with the tips still folded up. It doesn’t look like they are visible from the cockpit. How about any additional maintenance required?

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system

I’m not a 777 pilot but my guess is that no wingtip deployment would bring on such a cacophony of visual and aural takeoff inhibits and configuration warnings the likes of which would make a takeoff attempt so unlikely as to say “impossible”. Even in older generation aircraft, V speeds and auto throttles are inhibited and aural and visual warnings abound with an actual flap setting different from that which is programmed into the flight management system prior to takeoff.

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system

In other words, the annunciator panel would light up like a pinball machine.

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LetMeFly17

If memory serves from my time working on the 777X program, the computer will not let the pilot advance the throttles if the wingtips are not down and locked.