Hi,I have been trying to fly the Queen, but I cannot seem to get the A/T and VNAV to Work. I was flying from Sydney to Changai. Everything seem prgrammed OK into the FMC. I took off on Take Off /GA A/T. At about 700 Ft ASL I engaged the VNAV; L NAV and the left hand A/P switch on the MCP. The EFIS displayed "THR REF LNAV VNAVSP". The aircarft seemd to catch the LNAV course fine, but it did not accelerate towards the speed set by the FMC or did it climb (in fact it sank). The FMC stated that it was in Clmb Spd 253 mode but it would not climd. When I tried to chage it to ordinary vspeed, it ignored this too and just climed at what ever rate the speed of the aircraft would allow. Thus the plane seemd to seesaw between climbing fast and not at all and had trouble maintaining any speed. I checked the notice board, and followed the first of the the PMDG TC's but I seem to have all the systems working. I was not using any other programmes apart from Active Sky and had the update installed.Can anyone help.ThanksNick Allan

Yes sir, a screenshot would help and will explan it at least for me to help you.[h4]Randy J. Smith[/h4]AMD 64 4000+|ASUS K8V DELUXE|SAPPHIRE ATI X800XT PE|MUNCHKIN 3200|80 gig SATA|DELL 1905FP 19" LCD|TRACKir PRO|PFC JEPPESEN MOONEY YOKE|CH PRO PEDALS|

Randy,This is waht I see when I am up

One thing I've noticed is that your flaps are up WAY too soon. That can certainly lead to her being able to maintain speed/attitude. The flap retraction schedule is set for you on the speedtape (i.e. the EARLIEST you should go clean with the flaps is when the speed reaches the green "up" bug.

Why is your APU running?

Couple things,1. Why are your flaps already up way before you hit the bug that tells you to put them up?2. You're very heavy by the looks of it. I assume you meant you're going to Singapore Changi? I just set that route up in FSBuild with the 747 profile and it calculates a required fuel load of 166,000 lbs. You have nearly twice that amount loaded and depending on what you have your pax/bagage/cargo load set to, you may be over max weight, which would explain the sluggish climb performance.3. You've got a font problem on the PFD somehow - the letters are too big and it's cutting the D in VNAV SPD off the display...