Pilot's Guide

190-009663-02 Rev. B Garmin G1000 Pilot’s Guide for the Hawker Beechcraft C90A/GT/GTi 123
AUDIO PANEL AND CNS
4.4 GTX 33 MODE S TRANSPONDERS
The GTX 33 Mode S Transponders provide Mode A, Mode C, and Mode S interrogation and reply capabilities.
Selective addressing or Mode Select (Mode S) capability includes the following features:
•Level-2 reply data link capability to exchange information between aircraft and Air Trafc Control (ATC)
facilities
•Surveillanceidentiercapability
•FlightID(FlightIdentication)reporting–TheModeSTransponderreportsaircraftidenticationaseitherthe
aircraftregistrationorauniqueFlightID.
•Altitudereporting
•Airbornestatusdetermination
•Transpondercapabilityreporting
•ModeSEnhancedSurveillance(EHS)requirements
•Acquisitionsquitter–Acquisitionsquitter,orshortsquitter,isthetransponder24-bitidenticationaddress.
The transmission is sent periodically, regardless of the presence of interrogations. The purpose of acquisition
squitteristoenableModeSgroundstationsandaircraftequippedwithaTrafcAvoidanceSystem(TAS)to
recognizethepresenceofModeS-equippedaircraftforselectiveinterrogation.
•Extendedsquitter–TransmitstheAutomaticDependentSurveillance-Broadcast(ADS-B)position,velocity,and
heading information periodically without requiring an interrogation.
TheHazardAvoidanceSectionprovidesmoredetailsontrafcavoidancesystems.
TRANSPONDER CONTROLS
TransponderfunctionisdisplayedonthreelevelsofsoftkeysonthePFD:Top-level,ModeSelection,and
CodeSelection.Whenthetop-level XPDR Softkey is selected, the Mode Selection softkeys appear: XPDR1,
XPDR2, STBY , ON , ALT , VFR , CODE , IDENT , ADS-B TX , BACK .
When the CODE Softkey is selected, the number softkeys appear: 0 , 1, 2 , 3 , 4 , 5 , 6 , 7 , IDENT , BKSP,
BACK . The digits 8 and 9 are not used for code entry. Selecting the numbered softkeys in sequence enters
thetranspondercode.Ifanerrorismade,selectingthe BKSP Softkey moves the code selection cursor to the
previous digit. Selecting the BKSP Softkeyagainmovesthecursortothenextpreviousdigit.
Selecting the BACK Softkey during code selection reverts to the Mode Selection Softkeys. Selecting the BACK
Softkeyduringmodeselectionrevertstothetop-levelsoftkeys.
The code can also be entered with the FMSKnoboneitherPFD.Codeentrymustbecompletedwitheither
the softkeys or the FMS Knob, but not a combination of both.
Selecting the IDENT Softkey while in Mode or Code Selection initiates the ident function and reverts to the
top-levelsoftkeys.
After45secondsoftranspondercontrolinactivity,thesystemrevertsbacktothetop-levelsoftkeys.