Airplane Flight Manual Supplement

190-00682-02 Rev. D Hawker Beechcraft C90A and C90GT King Air
Page 45 of 117
AIRSPEED MISCOMPARE
This message is displayed when the G1000 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). Refer to
the G1000 Cockpit Reference Guide for additional information.
1. Pilot’s and Copilot’s Airspeed .....................................COMPARE with Standby Airspeed Indicator.
THE STANDBY AIRSPEED INDICATOR USES THE SAME PITOT-STATIC SOURCES AS THE
COPILOT’S SIDE AIR DATA COMPUTER (ADC2). DO NOT USE STANDBY AIRSPEED
INDICATOR OR STANDBY ALTIMETER AS SOLE SOURCE IN DETERMINING CORRECT AIR
DATA INFORMATION.
If Pilot and Standby Airspeed Indicator Agree (Copilot Airspeed Differs):
2. SENSOR Softkey (Copilot’s PFD) .........................................................................................PRESS
3. ADC1 Softkey.........................................................................................................................PRESS
4. PFD Displays .......................... CONFIRM
annunciator is displayed on both PFDs.
If Copilot and Standby Airspeed Indicator Agree (Pilot Airspeed Differs):
2. Pilot and Copilot ALTITUDE ....................................................................................................NOTE
If Pilot’s and Copilot’s Altitude Agree:
3. Airspeed 120 KIAS MINIMUM on slowest indicator
4. Monitor all three airspeed indicators during changes in power or altitude to determine which
indicators are inaccurate. Indications of inaccurate airspeed include:
• No change in indicated airspeed when power change and altitude maintained.
• Indicated airspeed increases when climbing or decreases when descending.
5. Use SENSOR softkey to select most accurate ADC on the affected PFDs
6. Airspeed ............................................................................................. RESUME NORMAL SPEEDS
If Pilot’s and Copilot’s Altitude Do Not Agree:
1. Refer to Abnormal Procedures, ALT MISCOMP procedure to determine most accurate ADC.
WARNING