Cockpit Reference Guide

Cockpit Reference Guide for the Prodigy
®
Flight Deck 100
190-00685-06 Rev. A
124
Abnormal Operation
Flight
InstrumentsEAS
Nav/Com/
XPDR/AudioAFCSGPS Nav
Flight
PlanningProcedures
Hazard
Avoidance
Additional
Features
Abnormal
Operation
Annun/
AlertsAppendixIndex
ABNORMAL COM OPERATION
When a COM tuning failure is detected by the system, the emergency frequency
(121.500 MHz) is automatically loaded into the active frequency field of the COM
radio for which the tuning failure was detected. In the event of a failure of both PFDs,
the emergency frequency (121.500 MHz) automatically becomes the active frequency
on both COM radios.
AUDIO PANEL FAIL-SAFE OPERATION
If there is a failure of both Audio Panels, a fail-safe circuit connects the pilot’s
headset and microphone directly to the COM1 transceiver and the copilot’s headset
directly to the COM2 transceiver. Audio is not available on the speakers. If there is a
failure of one Audio Panel, that side only has access to their respective on-side fail-safe
COM.
NOTE: Audio is not available on the speakers in case of an Audio Panel and
its cross-side GIA unit simultaneous failure.
If there is a failure of one Audio Panel, the remaining Audio Panel does not have
access to the other side’s COM or NAV. For example, if the pilot side Audio Panel
fails, the copilot side Audio Panel has access to all the radios except for COM1 and
NAV1. In this case, the copilot can receive the audio from NAV2 and operate COM2
for transmission/reception.
In addition, if there is a failure of one Audio Panel, the following functions are no
longer available on the failed side; NAV/ILS audio, speaker, cockpit/cockpit-passengers
intercom, aural warning alerts on headset, entertainment inputs, and digital recording
radio. Also, if a stereo headset is in use, and an Audio Panel fails, only the left channel
will be heard in the headphones.
HAZARD DISPLAYS WITH LOSS OF GPS POSITION
If GPS position is lost, or becomes invalid, selected hazards being displayed on the
Navigation Map Page are removed until GPS position is again established.
Loss of Hazard Functions with Loss of GPS Position