During descent on my last few flights I had a strange squeal or whistle in the right earcup on my Bose A20 headset.
I now have some hints to try from this website, but was wondering if anyone else has experienced this? The only "change" lately has been it's pretty darn cold, so perhaps the electronics are acting up, or my headset ear cup is not sealing right. Only happens in the right headset, and only during descent to land.
https://www.boseapac.com/en_in/support/articles/HC2525/productCodes/a20/article.html.html.html.html
I now have some hints to try from this website, but was wondering if anyone else has experienced this? The only "change" lately has been it's pretty darn cold, so perhaps the electronics are acting up, or my headset ear cup is not sealing right. Only happens in the right headset, and only during descent to land.
https://www.boseapac.com/en_in/support/articles/HC2525/productCodes/a20/article.html.html.html.html
someone from Bose on their Website said:Be sure the headset is being worn properly.
Due to the angle of the earcups, proper left and right earcup placement is essential for the headset to fit around both ears. The headset's performance can be greatly reduced if the earcup fitment around the ears is poor. For more information, see Wearing and adjusting your product.
Determine if any recent changes have been made to the headset or aircraft.
If any changes or modifications have been made to either the headset or the aircraft, look into whether or not those changes could have unexpectedly caused this issue.
Determine if the headset squeals when it is not being worn.
If the headset can be heard squealing when not being worn, your headset may need service. Follow the link below for more information on how to service your headset. Depending on your product and region, you will be provided a contact number or the ability to setup service online.
Check if the issue only occurs at certain altitudes.
In non-pressurized aircrafts, the effectiveness of noise-cancellation decreases as the alititude increases. The headset might also produce a whining sound in these situations. For info on maximum altitude for full noise cancellation, refer to the headset specifications.
Replace worn ear cushions.
The issue may be caused by the lack of a proper seal by the ear cushions around the ear. Also check to be sure the cushions are securely attached to the earcup. Replacing worn ear cushions will aid in comfort, the performance of the active noise reduction and battery life
Determine if the issue occurs when your headset is powered off.
Your headset works in passive mode (powered off with no noise cancellation). If the issue still occurs while the headset is powered off, the issue is related to signal coming being received by the headset from the aircraft panel (i.e. the connections, wiring, or interference).
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.