I am not getting any V speeds on my FMC, any suggestions?

 

 

any suggestions?

 

Forum searches help.

 

Here's a thread I found using search with a rather helpful answer:

http://forum.avsim.net/topic/425872-odd-problems-on-v-speed/#entry2847857

Did you go through the tutorial?

I am not getting any V speeds on my FMC, any suggestions?

See the PMDG Tutorial starting on page 43. They are certain combinations of Derates and Assumed Temperatures that are not going to produce V speeds in the FMC because they simply will not get the plane off the ground safely for the Gross Takeoff Weight. For example a D2, +65 degrees, Climb on a hot day probably won't produce V speeds.

 

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Thank you.

Did you initialize the ADIRU first?

I am not getting any V speeds on my FMC, any suggestions?

See my above post #4. I ran out of time last night and didn't complete the post. If you do find a solution to your no V Speed problem and they appear in the FMC that does not indicate that your takeoff will be successful. You also need to use a program called TOPCAT that will determine derates and assumed temperature for your takeoff. It takes into consideration wind direction/speed, altimeter or Q, flap setting, Gross Takeoff Weight, and runway length. Near max GTOW on a 12000 foot runway I will end up with a D1, Flaps 5 and a range of assumed temperatures to select depending upon the margin I want between takeoff and a decision to abort the takeoff.