on takeoff in the 737, i press the togo button and i rotate at vr. i use the FD and a/t for the climb. At around 1000' agl i turn on the CMD-A and Lnav works fine. But when i press VNAV it starts doing some crazy stuff. I have my altitude set for 5000' MSL due to atc limitation but whenever i press Vnav it either won't let me select it, or when it sometimes RANDOMLY does, it slowly starts descending down to the ground. I try to scoll up with the v/s thumbweel to make it climb but i get no reaction out of the thumbweel. I try pressing the alt button again. No reaction. I pull back on the yoke, no reaction. The alt function is obviously engaged because it won't let me pull up manually.
The only way to fix this? I found out when i increase the altitude from 5000 to 6000 lets say, the numbers under the v/s thumbwheel show up at whatever v/s i am currently. In my case it's almost allwasy around -2000vs and i have to scoll that # up to 2000'. This is VERY UNREALISTIC!!!!!!!!!!!!!!
Or maybe it is. Maybe in a real 737 when you take off, you can't just simply set 5000' and actually expect the plane to climb up to that altitude at a specific v/s.. Maybe a real 737 just tried to plummit to the earth and wont respond to anything unless you change the altitude restriction to a different alt.
Another problem i'm having is probably not a fault in fs2002 or dreamfleet. It's the descent capture. On the map on a cruise, it shows me when the a/c is suppose to start descending to reach a certain fix at lets say 12000' But the a/c crosses that fix without descending. Before the fix i make sure that i change th alt on the a/p to 12000' but still, not descent.
Only thing that somewhat works is going to the fmc and going to the desc option and selectiong capture. But even if i didn't reach the fix yet, and i press capture, it starts descending...
Also, on slow flight. around 200kias, which is not that slow with 5deg of flaps lets say, the stupid a/c won't turn past 10deg of bank! I mess around with the bank angle knob but it does nothing..
There are many many more bugs with this 737. I love the fact that's it's extremely realistic but the contrast between this realisim and these crazy "bugs" is very high and makes it very unpleasant to fly.