As a general rule,
Bose A20 and
Bose A30 headset ear cushions should be replaced every six months or every 300 hours
of use, depending on how often you fly. You may need to replace them more often
if you:
- Have a full beard or heavy whiskers
- Subject the headset to severe temperature extremes such as parking your
airplane outside in severe cold or heat
- Put excess strain on the cushions because of improper storage
Indications that the ear cushions need replacing include:
- Flaking of the outer covering
- Cuts or tears
- Flattening of the cushion, reducing the effectiveness of the seal
against your head
Ensure the performance and comfort level of your A20
or Bose A30 aviation headset. Use as a
replacement for lost, damaged, or worn ear cushions
This is an aftermarket cover that replaces Bose part
327079-0010.
The original Bose
A20 / A30 Ear Cushions can be found here.