FlyQ Pilot's Guide

The app uses the sensors in your device to determine location, yaw (lateral direction), pitch, and roll. It does not use an AHRS, even if you have one connected, because the app lets you point the device in any direction, not just straight out the windscreen. When not moving, yaw is determined solely by the compass in your device. The compass isn't very accurate so using the app while at your desk will give you a sense of how the app works but can't accurately display airports. The FRONT and WIND CAL buttons, explained below, dramatically increase accuracy but the app can only show approximate locations so do not rely on it for absolute accuracy. The sensors in your iPad and iPhone were never designed for the tricky physical, magnetic, and electrical environment of your plane.

FRONT

The FRONT button at the upper right of the screen helps calibrate lateral position. It has 3 modes: clear (off), yellow (medium accuracy), and green (highest accuracy).

Clear Mode

When you start the app, it doesn't know which way is front so the FRONT button is clear (Off). In this case, the compass (or magnetometer ) in your device determines direction. The compass is highly affected by the magnetic and electrical "noise" so isn't especially reliable.

Yellow Mode

When moving, point the camera straight out the front of the plane and tap FRONT . That tells the app which way is forward and calibrates the system. The button turns yellow to indicate some position accuracy. You can move the iPad/iPhone left and right to see airports to the side or behind you. Over time (such as a couple of minutes), accuracy will decrease as the device sensors drift so you may want to re-center the device and click FRONT every once in a while.

Green Mode

For better accuracy, you can lock the camera to the front position. This tells the system to always assume the device is pointed straight outside and ignore the device's gyros and compass. Tap and hold FRONT for a few seconds and the button turns green to indicate that it's locked to the front position. In this mode, rotating the device left or right has no effect; the app assumes it's looking straight outside so always shows airports directly in front of you. The accuracy is very stable as it does not use gyros or compass in your device, relying solely on your GPS track.

FlyQ EFB Pilot’s Guide

Version 3.0 (2/8/2018)

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