Help with S-TEC 50 A/P

On Fri, 2 Jun 2006 19:12:29 -0500, "Dan Luke"
wrote:


"Michael Ware" wrote:

Okay, one of the club's planes has an autopilot installled, that I have
never been able to make operate. Get up to level cruise, turn it on and
wait. All I get is a blinking 'TRIM UP' light, never get the 'READY'
light.
Is it hosed, or am I missing a step?

Switch it to "Test" first. It will do its test sequence, ending with a
bunch of lights on, including the "Trim Up" light, IIRC.

Then, switch it to "On." The green "Rdy" light will illuminate. If you now
press the "On" button, the "Push Hdg/Sts"activates in wing leveler mode.
Press the "Push Hdg/Sts" button and the autopilot will steer to the course
set on the heading bug. Once the bank axis is active, the altitude hold
function is available.

Mine must be broke. I can turn on alt hold with out the heading being
active. It doesn't care which sequence I use other than it takes a
minute or so before the altitude hold works after turning the AP on.

Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair)
www.rogerhalstead.com