Airplane Flight Manual Supplement

190-00682-02 Rev. C Hawker Beechcraft C90A and C90GT King Air
Page 33 of 95
G1000 INTEGRATED AVIONICS SYSTEM
ALTITUDE MISCOMPARE
This message is displayed when the G1000 detects a difference of 200 feet or greater between
the pilot’s and copilot’s altitude information. Refer to the G1000 Cockpit Reference Guide for
additional information.
1. Altimeter Settings.................................................................VERIFY both pilot and copilot have the
correct barometric altimeter setting.
2. Pilot’s and Copilot’s Altitude........................................................COMPARE with Standby Altimeter
THE STANDBY ALTIMETER USES THE SAME STATIC SOURCE AS THE COPILOT’S SIDE
AIR DATA COMPUTER (ADC2). DO NOT USE STANDBY ALTIMETER AS SOLE SOURCE
IN DETERMINING CORRECT ALTITUDE.
¾ IF PILOT PFD AND STANDBY ALTIMETER AGREE (COPILOT PFD DIFFERS)
3. SENSOR Softkey (Copilot PFD)............................................................................................PRESS
4. ADC1 Softkey.........................................................................................................................PRESS
5. PFD Displays ............................CONFIRM
annunciator is displayed on both PFDs.
¾ IF COPILOT PFD AND STANDBY ALTIMETER AGREE (PILOT PFD DIFFERS)
3. Pilot’s Static Air Source..................................................................................SELECT ALTERNATE
A sudden sustained change in rate-of-climb indication accompanied by abnormal indicated
airspeed and altitude changes beyond normal calibrated differences observed on the Pilot’s
PFD would indicate a blockage of the pilot’s static system.
• If Pilot’s PFD and Copilot’s PFD agree within normal calibrated differences with Pilot’s
Alternate Static Air Source in the ALTERNATE position:
Refer to Section 5, PERFORMANCE in the airplanes AFM for Airspeed Calibration and
Altimeter Correction.
 If no change in rate-of-climb, airspeed, or altitude is observed:
4. Pilot’s Static Air Source........................................................................................SELECT NORMAL
5. Compare indicated altitude to GPS altitude on MFD AUX-GPS STATUS page to aid in
determining which primary system is most accurate.
WARNING