Model 560XL Section III – Operating Procedures
Abnormal Procedures
Textron Aviation Citation 560XL 190-02313-03 Rev. 8
3-40 FAA Approved
VDI MISCOMPARE
VDI Annunciator displayed during Baro VNAV Approach
The G5000 system is capable of providing an automatically generated and temperature compensated
glidepath on certain RNAV approaches when SBAS is not available. This automatically generated
glidepath depends on temperature input from the air data computers to function properly
If a difference in temperature compensated altitudes from the two air data computers differs by more
than 50 feet, the VDI Miscompare annunciator will be displayed on both PFDs.
1. Altimeter Settings – VERIFY both pilot and copilot altimeters have the correct baro setting.
IF THE VDI MISCOMPARE ANNUNCIATION REMAINS AND THE FLIGHT CREW IS ABLE TO
DETERMINE THE ACCURATE VDI
2. CPL Button on GMC 7200 – PRESS to select PFD with accurate VDI
3. APPR Button on GMC 7200 – PRESS / VERIFY FMS and GP are captured
IF THE VDI MISCOMPARE ANNUNCIATION REMAINS AND THE FLIGHT CREW IS NOT
ABLE TO DETERMINE THE ACCURATE VDI
2. Do not use the VDI for vertical guidance information. Approach may be conducted to LNAV
minima.
Procedure completed
VDI NO COMPARE
VDI Annunciator displayed during Baro-VNAV Approach
The G5000 system is capable of providing an automatically generated and temperature compensated
glidepath on certain RNAV approaches when SBAS is not available. This automatically generated
glidepath depends on temperature input from the air data computers to function properly. In the event
that a temperature input fails, the following will occur:
If the AFCS FD is coupled to the affected side in APPR mode, “GP” mode will revert to PIT mode.
This will be indicated by “GP” flashing black text on amber background for 5 seconds, then green
PIT mode.
The non-affected side PFD will continue to display the VDI. The autopilot may be transferred and
coupled to this side if desired.
If the AFCS FD is coupled to the non-affected side in APPR mode, it will remain coupled (GP
remains green).
The affected side VDI is flagged with “NO GP”. The non-affected side VDI remains displayed.
The “L/VNAV” indication on the CDI remains for both pilot and copilot.
IF AFCS FLIGHT DIRECTOR IS COUPLED TO SIDE WITH VDI REMOVED
1. CPL Button on GMC 7200 – PRESS to select other side.
2. APPR Button on GMC 7200 – PRESS / VERIFY FMS and GP are captured.
Procedure completed
IF AFCS FLIGHT DIRECTOR IS COUPLED TO SIDE WITH VDI DISPLAYED
1. AFCS FD will remain coupled in FMS and GP modes.
Procedure completed