Boeing 777 engine-out cruise question
Hey guys
Just a quick question. Looking at the engine inoperative cruise technic in my manual, I've noticed a big difference when VNAV is engaged, and when it's not. With " VNAV not engaged " : - Select CLB/CON on MCP - Select a lower altitude on the MCP - Select FLCH and disconnect the A/T Why would you disconnect the A/T right away in FLCH and not in VNAV ? Sorry if the question seems stupid, or maybe I just miss a key point here, but I can't figure why.. Thanks ! |
With VNAV engaged, the autothrottle will maintain MCT for the driftdown descent. With FLCH engaged, the autothrottle will reduce thrust - that may not be desirable if terrain is a factor.
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Better be quick disengaging the A/T after you select FLCH or it will close the thrust before you can blink!!
Why not select CLB/CON first, wait a sec while the Thrust advances then disconnect A/T, then select FLCH? |
Why not select CLB/CON first, wait a sec while the Thrust advances then disconnect A/T, then select FLCH? |
That makes sense now. Thank you so much for your help ! :)
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