Navaid Devices AP-1, Руководство пользователя

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If the TRIM RANGE trimpot does not have sufficient range, reset it to midrange. Then
use the TURN CONTROL to make the airplane fly straight. Leave everything as is, turn
the autopilot off, and land the airplane.
When the airplane is on the ground and the Wing Leveler is engaged again, the ailerons
will go to the correct level flight position. Mark this position. Now put the TURN
CONTROL back into the dead zone, which will move the ailerons away from neutral.
Then jink the servo FEEDBACK pot or adjust the mechanical linkage so that the aileron
is returned to the marked position.
TRIMMING FOR TRACK MODE
The autopilot should be set for proper aileron trim in WING LEVELER mode before
switching to TRACK. This is not a one time adjustment-you will probably have to check
the aileron trim every time you use the autopilot. Trim can change as a function of power
setting, fuel load imbalance, or trim tab adjustments. Aileron trim error shows up as a
tracking offset.
A common mistake is to leave in a TURN CONTROL input (turn control not in dead
one) while trimming the aircraft in Wing Leveler mode. This input drops out when you
switch to Track, which will introduce a tracking error if the TURN control input is
anything other than zero before switching. Therefore, always make sure that the TURN
CONTROL is in the dead zone while trimming.
With the TURN CONTROL in the dead (zero input) zone, adjust the TRIM control or
TRIM RANGE trimpot as necessary for straight line flight. If you are uncertain that you
are really in the dead zone, use the TURN CONTROL to roll the airplane back and forth.
Rotate the knob slowly at a constant rate, and you can detect a pause in the roll as the
knob goes through the dead zone at the center of rotation.
TRACK MODE
When you are first learning to use the autopilot to track a VOR, be sure you are within
ten degrees of the correct heading and no more than ten degrees off course, i.e., just
barely carrying full deflection of the CDI needle, before engaging the Track mode. In the
case of a LORAN, be sure you are within 10 degrees of the correct heading and no more
than 5 miles off course.
If you are using a VOR for making the following adjustments, try to stay within 1.5 to 15
miles of the VOR to be sure that the airplane responds to the adjustments within a
reasonable length of time. After each adjustment, the aircraft must fly to a new bearing
from the VOR before the CDI needle can stabilize.