Chapters and articles
09Gas Pilot and QNH

QNH and pressure-derived altitude

Use the device pressure sensor to adjust barometric altitude where supported.

Pressure Sensor Altimeter is included in Free and Premium. QNH and pressure-derived altitude require a compatible device with a usable pressure sensor.

GPS altitude and pressure-derived altitude are different measurements and can differ. In supported screens, QNH Settings provides the current value, pressure unit, adjustment controls and a Standard setting.

FlyMate QNH Settings with adjustment controls and Standard pressure option
FlyMate QNH Settings with adjustment controls and Standard pressure option
  1. 01

    Open the altitude or QNH control offered by the current flight screen.

  2. 02

    Confirm the pressure unit.

  3. 03

    Adjust QNH using the visible controls or choose Standard when appropriate.

  4. 04

    Close the panel and verify the altitude display.

  5. 05

    Compare with current official pressure information and required procedures.

In this chapter

Gas Pilot and QNH

Set up a gas balloon, record ballast changes and use pressure-derived altitude on compatible devices.

Set up a gas balloonStart a Gas Pilot flightRecord a sandbag releaseBallast Management display