This may just affect the heavies (737/A321) but was curious if others noticed this odd effect.Okay, I set the autopilot to climb to an altitude, and it goes at the climb/descent rate I have set, all good so far. Now, ATC asks me to fly to a new altitude while I'm close to reaching the previously assigned one, so I dial in the new value, and my climb/descent rate setting is still the same - but the autopilot now only keeps the plane climbing/descending at about 1000 ft/min, until I change the value on the climb/descent rate knob - and then it magically jumps to the setting displayed.Anyone else noticed this? I never noticed this in FS9, so wondered if it was just a FSX quirk - or do these aircraft really react like this until you change the climb/descent rate, kind of as a way of getting a confirmation for how fast you want to reach the new altitude?Thanks!Andy.

Yes, I've noticed this too so you're not alone. I have the VS set at 1800 fpm but, when I increase or decrease the altitude, the VS indicator still indicates 1800 fpm but it is actually climbing or descending at approx 1000 fpm. I simply increase the VS to 1900 or higher and then immediately return it to 1800 and the VSI shows the actual value I set it (1800). I could understand this happening with a properly programmed flight management computer but the default aircraft do not simulate the FMC. Just wanted to let you know you're not alone....Best regards,Jim

Thanks for the response - certainly glad I'm not alone with this issue. I do the same thing, just click it off one notch and then back to the setting I want! Bit annoying - but it works!!!!