Garmin Flight Deck 100 Manuel D’Utilisation

190-00728-04  Rev. A

160

The Audio Panels perform a self-test during power-up. During the self-test all Audio Panel annunciator lights 

illuminate for approximately two seconds. Once the self-test is completed, most of the settings are restored to 
those in use before the unit was last turned off. The exceptions are the speaker and intercom, which are always
selected during power up.

Stereo or mono headsets are recommended for use in the cockpit of the aircraft.

Using a monaural headset in the jack panel of the cockpit shorts the right headset channel output to ground.  

While this does not damage the Audio Panel, a pilot listening on a monaural headset hears only the left channel 
in both ears.

Each Audio Panel controls a separate cabin speaker.  Pressing the SPKR Key selects and deselects the on-side

speaker unless oxygen masks are in use. While using oxygen masks, the cross-side cabin speaker is always on,
pilot audio is always heard on the speaker, and the SPKR Key can not be disabled (the speaker remains on) on 
the side in which the oxygen mask is in use.

All of the radios can be heard over the cabin speakers.  Speaker audio is muted when the PTT is pressed.  The 

“Stall” aural warning is always heard on both speakers, since the SPWS automatically activate the pilot and co-
pilot speakers (if they are not already turned on) in the event of Stall Warning activation..