Pilot’s Operating Handbook Section 903
EXTRA 500 Bose Headset
To remove: gently pull back on the sleeve of the connector.
This automatically unlocks the plug from the socket.
903.1.b Microphone Placement
For good communication clarity and noise rejection, locate the
microphone housing so that it just brushes your lips.
903.1.c Adjusting the Volume
For the active noise reduction and volume control circuitry to be
active, the headset must be turned on using the on/off switch
located on the headband arm.
The volume for your headset is controlled by the grooved knobs
located on the front side of the headband arms.
Avoid setting your volume controls at high levels that may
affect your hearing during extended periods of headset use.
Note The volume controls and active noise reducing circuitry
work only when the headset is turned on. The volume
cannot be turned off completely.
903.1.d Fail-resistant Operation
The headset provides communication and the ear cups blocks
some noise even with the power switch on your headset turned
off, bypassing all active noise reducing electronics. Turn the
headset off if you suspect there may be a problem.
903.2 Section 2 - Limitations
No change.
903.3 Section 3 - Emergency Procedure
No change.
903.4 Section 4 - Normal Procedure
No change.
26. January 2011
903-3
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