Your speaker could interfere with other passengers�?devices. If your speaker is too loud, it could interfere with other passengers�?devices, such as their headphones or tablets. This might make it tough for them to watch movies or listen to music. The Federal Aviation Administration (FAA) provides a list of restrictions https://www.bluetoothspeaker.top/new-bluetooth-speaker-wireless-audio-card-outdoor-waterproof-high-power-subwoofer/