TruTrak AP IV User Manual

Trutrak Flight Systems

EFIS AP IV Pilot’s Guide

March 2008

Button labels – White - mode is OFF, Green - mode is ON
Click – Momentarily push and release any knob or

button

Press – Push and hold any knob or button for 2 seconds

and release

Enter – Click knob labeled

[ Enter ]

Basic Operation

Barometer adjust – Rotate right knob
Track bug adjust – Rotate left knob
Altimeter bug adjust – Click ALT button, bug will synchronize to

nearest 100 feet
Rotate right knob to select new altitude
(Depress knob for 100 ft resolution)
Click

[ Enter ]

Altimeter bug cancel – Click ALT button
Dimmer function – Click left knob to enter setup mode
Rotate left knob to set desired brightness
Click

[ Enter ]

Nav mode – Click NAV button
Nav mode cancel – Click NAV button or rotate left knob

(Track bug adjust)

Autopilot and Flight Director Operation

Autopilot on / off – Click AP / FD button – on,

Click AP / FD button – off

Flight Director on / off – Press AP / FD button – on,

Press AP / FD button – off
Track select – Rotate left knob
Nav mode – Click NAV button
Nav mode cancel – Click NAV button or rotate left knob

(Track select)
GPS Steering – Click GPSS button
GPS Steering cancel – Click GPSS button or rotate left knob
(Track select)
Altitude select – Click ALT button, bug will synchronize to

nearest 100 feet
Rotate right knob to select new altitude
(Depress knob for 100 ft resolution)
Click
Vertical speed adjust – Rotate right knob

[ Enter ] (Initial VS is +/- 500 FPM)

VNAV – Click ALT
Rotate right knob to select altitude below current
(Depress knob for 100 ft resolution)
Click DIST
Rotate right knob to select desired distance
Click

[ Enter ]

WAAS approach – Click GPSS (GPSV will appear when available)
Click GPSV (Glide slope scale will appear)
Missed approach – Click GO AROUND (Enters Track select and

+ 500 FPM climb)

Barometer adjust – Click right knob to enter setup mode

Rotate right knob to adjust barometer setting
Click

[ Enter ]

Dimmer function – Click left knob to enter setup mode

Rotate left knob to set desired brightness

Click

[ Enter ]

Arrival Transition

(Note: Operation is the same regardless of AP or FD being on or off)

Arrival Transition – Click CRS
Rotate left knob to set HSI course pointer to

selected runway direction

Click APPR