Usage of VNAV in 737
Hi,
I'm a flightsimmer and was flying on Vatsim this evening and the controller told me to level off at FL 110 at my next Waypoint GIVME which was approximately 30 nm away.
At that moment I was flying at cruise level at FL 210.
My plan was to use VNAV descent for that job. So I changed the altitude of GIVME in the FMC to FL 110 and pushed the "Des Now" Button on the DES page of the FMC.
The plane started to descend with a V/S of exactly 1000 fpm. The controller asked me if this will work. Since I was 10000 feet above GIVME and the distance was approx. 30nm I thought the FMC will do everything correctly.
I think the formula is 21000-11000 = 10000 feet
10000/300 = approx. 30nm
However the V/S of 1000 feet/min turned out to be too low.
Can anyone tell me what I did wrong?
Thanks!
Best regards Andi