FAA Approved Airplane Flight Manual Supplement

Hawker Beechcraft King Air 300/300LW 190-00716-02 Rev. 3
Page 62 of 167 FAA APPROVED
HEADING MISCOMPARE
This message is displayed in the upper right corner of the PFD when the G1000 detects a
difference between the pilot’s and copilot’s heading information. Refer to the GARMIN G1000
Cockpit Reference Guide for additional information.
1. WSHLD ANTI-ICE Switches (PILOT and COPILOT) ................................................................. OFF
2. CABIN TEMP MODE selector ..................................................................................................... OFF
3. ELEC HEAT ................................................................................................................................ OFF
4. Refer to Magnetic Compass to determine which AHRS is providing the most accurate heading
information.
5. Use SENSOR softkey to select the most accurate AHRS on the affected PFD.
6. WSHLD ANTI-ICE Switches ..................................................................................... AS REQUIRED
7. CABIN TEMP MODE ................................................................................................... AS DESIRED
8. ELEC HEAT .............................................................................................................. AS REQUIRED
NOTE
The magnetic compass is affected by windshield anti-ice and/or air conditioner operation.
These items must be turned OFF prior to referencing magnetic compass heading, and then
may be reselected ON. With windshield anti-ice OFF, fog or frost may form on the inside
surface of the windshield. The windshield anti-ice should be turned off only long enough to
reference magnetic compass or the pilot should descend to a warmer altitude if terrain, fuel,
and endurance permit.
AMBER HEADING DISPLAY (GRS 7800 AHRS Only)
The PFD heading display will turn amber when:
 Unreliable heading data exists as detected by the system.
 Operating in DG FREE Mode when the system detects reliable heading data is available.
If Heading Display is Amber When Operating in DG SLAVE Mode:
1. Autopilot (If Engaged) ...................................................................................... SELECT ROL MODE
2. HDG MODE Softkey on PFD ................................................................................................. PRESS
3. DG FREE Softkey .................................................................................................................. PRESS
4. Verify the heading display is shown in cyan.
5. Use the ‘HDG –“ and ‘HDG +” softkeys to correct heading as required.
6. Autopilot ........................................................................... RE-SELECT DESIRED LATERAL MODE
If Heading Display is Amber When Operating in DG FREE Mode:
1. Autopilot (If Engaged) ..................................................................................... SELECT ROL MODE
2. HDG MODE Softkey on PFD ............................................................................................... PRESS
3. DG SLAVE Softkey ............................................................................................................... PRESS
4. Verify the heading display is shown in white.
5. Autopilot ......................................................................... RE-SELECT DESIRED LATERAL MODE