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Headset Care and Maintenance

Ear cushions

As a general rule, ear cushions should be replaced after 500 hours of

use, depending on how often you ﬂy. You may have to replace them

more often, if you:

• have a full beard or heavy whiskers

• subject the headsets to severe temperature extremes such as

parking your airplane outside in severe cold or heat

• put excess strain on the headset due to 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

To extend the life of the ear cushions, perform regular cleaning as

described in "General cleaning" on page 25.

If the ear cushions require more vigorous cleaning, remove them

from the earcups, as shown in "Replacing parts" on page 27. This is

to prevent damage to the protective inner screen during the cleaning

process.

Do not immerse ear cushions in water or any other liquid.

Remove the windscreen from the microphone as described in

"Microphone windscreen replacement" on page 27.

Wash the windscreen by immersing in mild soapy water. Rinse, air-

dry, and reattach the windscreen.

Do not attempt to remove, replace, repair, or clean this component.

Located inside the earcup, the inner screen is critical to proper head-

set operation. If the screen appears to cause operating problems,

contact the Bose

Aviation Headset Department.

Replacement parts can be ordered directly from Bose Corporation.

Please refer to "Contact information" on page 34.

AM270261_00 V.pdf May 16 2003