# Set Flight mode to disable transmitters

Source: [https://docs.qualcomm.com/doc/80-60631-1/topic/Flight-mode.html](https://docs.qualcomm.com/doc/80-60631-1/topic/Flight-mode.html)

The QTS110 flight mode feature disables the device transmitters while the device is in
    flight in accordance with FAA advisory circular A.C 91.21-1D.

The flight detection algorithm on QTS110 is designed to prevent emission while the device is
      in a flight. In the device has any scheduled transmissions to the cloud, the algorithm checks
      two independent sources to confirm whether the device is in flight:

- **Cellular Radio:** Measures the speed/velocity with which the device is moving. The
        cellular modem inside QTS110 is a Qualcomm Technologies, Inc. (QTI) low-power modem. It
        supports three radio access technologies: LTE-M (or eMTC), NB-IoT, and 2G/EGPRS. On LTE-M
        and NB, the device supports power class 5, which means it is capable of transmitting as high
        as 20 dBm. The power amplifier used for 2G supports transmit power up to 33 dBm.
- **Accelerometer:**  A 3-axis combo sensor containing an accelerometer and gyroscope
        that comes in small land grid array package (LGA) and with an operating temperature range
        from -40°C to +85°C.

When both of these checks confirm that the device is not on a flight, the device is allowed to transmit. If either one of the checks fails, the device is put in airplane mode, which prevents the device from transmitting and receiving any cellular signals.

FMD is disabled by default. To activate it, please create a support request at  [Aware
        Support](https://mysupport.qualcomm.com/aware/s/).

Last Published: May 29, 2025

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