TruTrak ADI Pilot II User Manual
Adi pilot i & ii series autopilots
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Table of contents
Document Outline
- TABLE OF CONTENTS
- ADI Pilot I & II Power Up
- The power up of the autopilot takes approximately ten seconds. During the power cycle it is very important that the aircraft be as still as possible for the initialization of the internal gyro. While the autopilot is in the power up mode, the display will show three flashing (“–”) characters. If there is a GPS signal present the display will now change to read (“OFF”). If there is not a valid GPS signal present the display will show three non-flashing (“–”) characters. Once the aircraft achieves sufficient groundspeed (approximately 15 knots) the display will begin showing the digital DG.
- ADI Pilot I & II Basic Operation
- If a valid GPS signal is present, and the autopilot is not engaged the display of the autopilot is a digital DG displaying a gyroscopically smoothened GPS track. Once the aircraft is off the ground and at a safe altitude, the autopilot can be engaged. There are several ways to engage the autopilot. Pressing and releasing the knob will engage the autopilot and the “AP” light will light up. If a GPS signal is present, the autopilot will display the ground track before being engaged and will now hold the track. If there is no GPS signal the display will show “0” and will be in “gyro back-up” mode instead of track hold mode. The second way to engage the autopilot is with the Control-Wheel Switch, pushing and holding the control wheel switch for approximately 1-1/2 seconds and releasing will engage the autopilot and the “AP” light will light up.
- Changing the selected track can be done two different ways. One way in which the track can be changed is to rotate the knob. Each detent will be a one-degree change in selected track. If the knob is pushed in and rotated each detent will be a 5 degree change in selected track. If there is no GPS signal present rotating the knob will change the selected bank angle by approximately one-degree per detent, up to 30 degrees. The other way to change the selected track is with the Control-Wheel Switch. Pushing and holding the Control-Wheel Switch will disengage the servo and the display on the autopilot will be a Digital DG .While holding the Control-Wheel Switch, fly the aircraft manually to the desired track using the Digital DG display as a reference. Upon release of the Control-Wheel Switch, the servo will re-engage and the autopilot will now fly the new selected track. If there is no GPS signal present the Digital DG will not be displayed.
- Disengaging the autopilot can be done in two different ways. Pressing and holding the knob for approximately 1-1/2 seconds will disengage the autopilot. The second way to disengage the autopilot is with the Control-Wheel Switch. Momentarily pushing and releasing the Control-Wheel Switch will disengage the autopilot.
- ADI Pilot I & II Nav Mode Operation
- ADI Pilot II Pitch Axis Operation
- Once the aircraft is off the ground and at a safe altitude, the autopilot can be engaged. Pressing and releasing the lower left knob will engage the pitch axis of the autopilot and the “ALT” light will light up. The autopilot will now hold the current altitude. The pitch axis can be used independently of the roll axis. If there is a trim sensing servo installed and the aircraft becomes out of trim then you will see a moving bar on the left side of the display telling the pilot which way to trim the aircraft. The altitude hold must be engage to show out of trim. When the difference between the current altitude and the initial selected altitude is more than approximately 50 feet you will see a moving bar on the left side of the display, showing which way to go to correct the difference in altitude. Many times on a long flight the barometric setting on the altimeter will need to be adjusted, the pitch axis does NOT have to be disengaged to move the aircraft to the correct altitude. Once the aircraft altimeter is correctly set, push and hold the left knob of the autopilot. While continuing to hold the knob in, the current altitude can be adjusted up to 90 feet in either direction.
- Disengaging the pitch axis of the autopilot can be done in three different ways. Pressing and releasing the lower left knob will disengage the pitch axis of the autopilot. If the roll axis is engaged, push and holding the lower right knob for approximately 1-1/2 seconds will disengage both the roll and pitch axis of the autopilot. Another way to disengage the autopilot is with the Control-Wheel Switch. Momentarily pushing and releasing the Control-Wheel Switch will disengage both the roll and pitch axis of the autopilot.
- Mechanical Considerations
- Pitot and Static Connections
- RFI/EMI considerations
- ADI Pilot I First Flight
- ADI Pilot II First Flight
- Electrical Pin-Out
- ADI Pilot I & II Settings