hey allhave a look a this time exposure photo of a VB 737 taking off from Sydney, look how it goes up n down up n down, and then commences its straight climb,interesting, now i know why my PMDG behaviours in the same way...comments?http://www.airliners.net/open.file/286452/L/

I guess not the whole plane was moving up and down, but just the wingtips.These lighttracks are from the nav-lights, which are mounted on the wingtips. So either the aircraft made small banks to correct the course or it was a bit shaken by turbulences which forced the flexy wings to swing.Just my 2c.Wolfgang

looks pretty straight to me, you should see what my bird does!But thats all normal