Copyright Higham Headsets 2014
Communications for Aviation, motorcycling and sport
To eliminate the possibility of the problem being in the aircraft, you should test the headset in a different aircraft if possible.
Usually there is no need to make a radio transmission to test a headset. You should make the following tests to show if the headset is working correctly, if you find your headset working satisfactorily it might actually be the radio that is faulty.
Check that the headset plugs are clean. Plated (silver or gold) headset plugs should not been cleaned with anything more abrasive than metal polish (such as ‘Autosol’) and a clean cloth. A light scuff with a cleaning pad (such as a 'scotchbrite') will clean non-plated plugs effectively.
Plug the suspect headset into either the pilot or co-pilot position, turn on the electrical master switch, and radio switch (and anything else that particular aircraft needs to activate such as the intercom), turn the headset earphone volume (on the headset) to maximum and talk into the microphone. You should hear your voice through the earphones of the same headset.
If you can hear your own voice the headset is working. Adjust the headset volume control through the full range from minimum to maximum to check that there is no fault with the volume control. You could also try wiggling the communication cords to see if this causes the headset to fail.
If you don't hear anything try the following:
If the intercom system has a voice operated switch or squelch control, try adjusting this from the minimum to the maximum limits while continuously talking into the microphone. If this adjustment allows you to hear yourself through the headset, the problem is either an adjustment problem or possibly a headset microphone problem. Try another aircraft to see if it was just an intercom sensitivity problem in the first one.
If you still haven't identified the problem get a second headset and plug it into the opposite (pilot or co-pilot) position. Talk into the microphone of the second headset while listening to the headset you are testing. If you can't hear anything, the headset you are testing might have a fault on the earphone side.
Now swap the headsets over and try the same test again.Talk into the microphone of the headset you are testing while listening to the second headset. If you can't hear anything, the headset you are testing might have a fault on the microphone side.
When you fill in the repair form pdf, make a note of the results of your testing.