I've been practicing Engine failures during takeoff with the wonderful 'Emergency NGX' from FS2Crew.

 

Can anyone confirm whether or not VNAV is working correctly during a engine fail situation? If VNAV is armed prior to take off it engages at 400'. At this point it should command the FD for a climb at V2 to V2 + 20, until reaching engine out acceleration altitude. It should then command a 'near level climb' to flaps up speed.

 

It currently isn't behaving that way (I think) - VNAV engages at 400' and the FD commands V2 + 20. At the FMC entered engine out acceleration altitude nothing happens. The speed bug just remains at V2 + 20. The solution would be to go speed intervene and select the flaps up speed. However the FD does not command a 'near level climb' - we'll still climbing at 800-900 fpm (and accelerating to be honest...maybe I'll try at heavier weights...).

 

Does the FMC entered engine out accel altitude actually do anything? Is VNAV working correctly here?

 

Adam Turley

I think this has been discussed before, and TABS said it might come out in a later service pack. Do a search, and you should find some answer.

I have noticed the same and I have the same problem, with or without emergency ngx.

 

Stéphane LI-THIAO-TE

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