Lost Vertical Autopilot
Posted: Sun Mar 01, 2015 2:43 am
HXr with GRT servos. Garmin GNS480.
Was working fine last time I flew (~6 weeks ago). Today, Lateral guidance fine in all modes. Every time I open AP menus, Vertical shows "off". No matter what mode I set, it never engages. (Shows "Vert Off" on PFD. It seemed to sometimes briefly show engaged, but the servos never did anything.). I went to the A/P section of the settings page. Everything communicating. Even so, I reset the breaker. Still no joy.
Today (next day) I pulled the nose cover (Velocity-Servo is mounted on canard) and powered up. I thought I saw the servo move initially, but no other control/EFIS manipulation caused it to move after that. As above, each time I engage the autopilot, the EFIS still shows vertical in Standby. Changing the setting in the Vertical Autopilot softkey menu does nothing,
Related info?: OAT 20 deg F.
I installed the latest GRT HXr software update since the last time I flew.
Was working fine last time I flew (~6 weeks ago). Today, Lateral guidance fine in all modes. Every time I open AP menus, Vertical shows "off". No matter what mode I set, it never engages. (Shows "Vert Off" on PFD. It seemed to sometimes briefly show engaged, but the servos never did anything.). I went to the A/P section of the settings page. Everything communicating. Even so, I reset the breaker. Still no joy.
Today (next day) I pulled the nose cover (Velocity-Servo is mounted on canard) and powered up. I thought I saw the servo move initially, but no other control/EFIS manipulation caused it to move after that. As above, each time I engage the autopilot, the EFIS still shows vertical in Standby. Changing the setting in the Vertical Autopilot softkey menu does nothing,
Related info?: OAT 20 deg F.
I installed the latest GRT HXr software update since the last time I flew.