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757 Captain >> 757 version 4.x (FSX ONLY) >> head is unstable after descend https://www.captainsim.org/forum/csf.pl?num=1216815746 Message started by bin801 on Jul 23^rd, 2008 at 12:22pm

Title: head is unstable after descend
Post by bin801 on Jul 23^rd, 2008 at 12:22pm

MY 757's head is vertically unstable after descend. Everytime, when it reach the altitude you set on MCP, the Autopilot didn't stay at LNAV and VNAV pitch. Autopilot change to ALT and the head keep up an down, never stop. the worse result is I can not LOck and App, sometime, after Lock, the plane heading a line parallel to the runway, and then steer lift and right...
How to resolve :-[?.....