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ProFlight Aviation Headset

Sold from 2018 – present

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No audio in one ear

If sound is missing from the left or right ear while listening to your product, try the following:

Check if the access cover and the cable connections are secure on both sides of the headset.

The cable for your product can connect to either the left or right side; on the opposite side, the access cover covers the cable connector. Be sure both the cable and the cover are securely connected. If either is not, audio and noise cancellation might be intermittent or might not work.

Be sure the headphone openings are clean and free of debris.

Check for blockages in the headphone mesh grille and headphone opening. Excessive debris can result in low audio, poor sound quality or missing audio channels.

Determine if the issue occurs with a connected Bluetooth® device.

Be sure the audio mode switch is not in the down (Intercom Only) position. Disconnect the headset from the panel and connect a Bluetooth audio device—like a smartphone—and play some music.
  • If the issue still occurs when playing music from the Bluetooth device, there is an issue with the headset
  • If the issue is not present with the Bluetooth device, the aircraft connections or settings could be the issue

In the control module on the cable, check the position of Intercom Mono-Stereo switch.

Try the Intercom switch in the ST and the MONO position and determine if audio returns in both ears.

Check if the aircraft intercom has a Mono/Stereo setting.

Some intercoms have a toggle switch or menu selection for stereo or mono operation. If the intercom is set to stereo but wired for mono, audio may still be heard in one ear when the operation switch is set to stereo.

Check the volume setting on the intercom/radio.

Adjust the volume knob on the intercom and/or radio and listen for a change in the volume level.

For 6-pin aircraft-powered installed connections, check the condition of the plug on the headset and the jack on the aircraft.

Check for any debris in the connector on the aircraft and check if any of the six pins are missing inside the headset plug.

Note: If the aircraft has a jack for an older model Bose AHX headset that was wired to provide mono audio to the right earcup, the jack will need to be rewired since the electronics in the newer A20 cable differ.

If connected, bypass any adapters or extension cables.

If your product connects to the device using an extension cable or adapter, disconnect the extension cable or adapter to determine if the issue is related to it.

Connect the headset to a different panel jack or, if possible, to another aircraft.

Non-TSO equipment, worn jacks/loose connections, or incorrectly wired jacks (i.e. reversed stereo or mic / ground wires) in the aircraft can cause issues. If available, try connecting the headset to another jack in the aircraft or to jacks in a separate aircraft. If the headset works fine when connected elsewhere, the panel jack or wiring to the jack is the issue.

Clean the headset cable connectors with isopropyl alcohol.

The connectors at the end of the headset cable might have debris or corrosion on them. Apply a small amount of isopropyl alcohol to a cloth, wipe the metal connectors, then dry them with a clean cloth. Once cleaned and dried, connect the headset and try again.

If the issue occurs with a certain source, select it below for more help.

When listening to a device connected to the 1/8" (3.5 mm) auxiliary input

When using a Bluetooth® device

Your product may need service.

If the steps provided do not resolve your issue, your product may need service. Follow the link below for more information on how to service your product. Depending on your product and region, you will be provided a contact number or the ability to setup service online.

Click here to start service
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