Model 560XL Section III – Operating Procedures
Abnormal Procedures
190-02313-03 Rev. 8 Textron Aviation Citation 560XL
FAA Approved 3-37
ALT MISCOMPARE
ALT Annunciator displayed
This message is displayed on both PFDs when the G5000 detects a difference of 200 feet or greater
between the pressure altitude output of air data computer 1 and air data computer 2.
The G5000 comparison is of uncorrected pressure altitude, i.e. the barometric setting of the pilot and
co-pilot altimeters will not affect the comparison.
1. Altimeter Settings – VERIFY Pilot, Copilot, and Standby Altimeters have the correct barometric
altimeter setting.
2. Pilot’s and Copilot’s Altitude – COMPARE with Standby Flight Display to determine which PFD is
providing the most accurate altitude.
3. PFD Softkeys: Sensors – ADC Settings – SELECT the most accurate ADC on the affected PFD.
4. With loss of redundancy of primary altimetry systems, perform appropriate RVSM contingency
procedures for the loss of primary altimetry systems.
NOTE
If ADC1 has failed, check pressurization controller for Isobaric Mode operation. Refer to
Abnormal Procedures, CABIN PRESSURIZATION CONTROLLER FAILURE (AMBER
LED ILLUMINATED-ISOBARIC MODE) in the aircraft flight manual.
Procedure completed
IAS MISCOMPARE
IAS Annunciator displayed
This message is displayed on both PFDs when the G5000 detects a difference of 7 KIAS or
greater between the pilot’s and copilot’s airspeed indicators (10 KIAS difference during takeoff or
landing roll).
1. Angle of Attack – MONITOR, do not allow the angle of attack to increase above 0.60.
2. Pilot’s and Copilot’s Airspeed – COMPARE with Standby Flight Display to determine which
display is providing the most accurate airspeed.
3. PFD Softkeys: Sensors – ADC Settings – SELECT the most accurate ADC on the affected
PFD.
Procedure completed
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