VNAV problems

[Guest Bjorn Ghezzi]

Hi all,regarding climb profiles I have one question.I have noticed that when climbing in VNAV or FL-CHG mode passing FL280-290, the plane starts to pitch up and down continuosly following the FD bars to mantain the desired VNAV profile or the speed if in FL-CHG. All this starts at as I said around FL290. I set the ZFW correctly. Load fuel using a fuel calculator and always cruise at my OPT cruise altitude. For the climb I usually use mach0.80. Does anyone know why it does this? It's annoying seeing the V/S varying continuosly from 1000 to 1500-2000 FPM and back down!!At that point I manually select V/S and keep climbing at about 1000-1200 FPM.Any help or advice would be greatly appreciated, thanks.Regards,Bjorn

[Guest Bjorn Ghezzi]

Bump!

[crvm]

This has been delt with many of times, so just do a "search" on this forum and you should find some answers....[h5]Best Wishes,Randy J. SmithSan Jose Ca[/h5][h3]" A little learning is a dangerous thing"[/h3]AMD [pink]XP[/pink] 2200 |MUNCHKIN 512 DDR RAM |ECS[/b ][i] K7S5A MB[/i] |GF3 64 MEG @ 215/545|WIN XP PRO |MITSUBISHI DIAMOND PLUS 91 19"