I am flying an empty positioning flight with no cargo on the 747F for FSX, and only a 3hr flight. The FMC is telling me FL441 is my optimum... but I thought the service ceiling is FL41?

I am flying an empty positioning flight with no cargo on the 747F for FSX, and only a 3hr flight. The FMC is telling me FL441 is my optimum... but I thought the service ceiling is FL41?

Hi, I would like to know what I have to Do to get the optimum altitude in PMDG MD-11.

FL451 is the maximum ceiling in the 744. Only in a ferry flight would you see FL450 IMO, but I've heard of a few flights getting to FL420 during the last phases of cruise. GuilhermeRies - The F-PLN INIT page will give you OPT and MAX FL after you enter your data for each flight (e.g., temp, CI). Also, the PERF pages (VNAV on Boeing) will give these values in the MD-11.

FL451 is the maximum ceiling in the 744. Only in a ferry flight would you see FL450 IMO, but I've heard of a few flights getting to FL420 during the last phases of cruise. GuilhermeRies - The F-PLN INIT page will give you OPT and MAX FL after you enter your data for each flight (e.g., temp, CI). Also, the PERF pages (VNAV on Boeing) will give these values in the MD-11.

Orlaam, thanks. I found that.

I am flying an empty positioning flight with no cargo on the 747F for FSX, and only a 3hr flight. The FMC is telling me FL441 is my optimum... but I thought the service ceiling is FL41?

Well if it wants you up there take it up there. It can probably go higher given less fuel and such.