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Annunciations & Alerts
3.2 AURAL ALERTS
The GFC 600 outputs aural annunciations and alerts to provide enhanced awareness
to the pilot of several key AFCS conditions.
VOICE ALERTS
Voice alerts are played through the aircraft audio panel and are heard through the
headset and/or cockpit speaker depending on installation and audio panel selections.
The alerts cannot be muted. The voice alerts include:
• AIRSPEED - The AIRSPEED aural announces a low indicated airspeed condition and is
played in conjunction with the Underspeed Protection function.
• ENGAGING AUTOPILOT - When ESP has been active for 50% of a 20-second time
period, the autopilot engages automatically in Level Mode and the ENGAGING AUTO-
PILOT aural is played.
AUTOPILOT DISCONNECT ALERT
Autopilot disengagement is accompanied by an aural 'bee-boop' alert tone which
is played through the audio panel and also through a separate Sonalert device (when
installed). The Sonalert is a small speaker that plays a tone heard in the cockpit above
the ambient noise.
Manual autopilot disengagement plays the alert two times. After it is played once
the pilot may elect to press the AP DISC / TRIM INT button again to silence the alert.
Abnormal (automatic) disengagement results in the alert being played continuously
until silenced by the AP DISC / TRIM INT button.
The alert is also played at the end of Preflight Test to notify the pilot that PFT is
complete. The alert is played regardless of whether PFT passes or fails.
62
Garmin GFC 600 Pilot's Guide
190-01488-00 Rev. B
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