What is the WX radar attitude source?
Attitude source selected by pilot who does NOT have autopilot selected.
If both pilots select the same source, WX radar defaults to AHRS 2
HSI source
With the 6 pack in…
FMS: whatever is selected as Attitude source
TACAN or VOR/LOC: opposite side AHRS
What does moving the Compass Select Switch to PILOT ON ALT do?
Removes AHRS 2 from pilot’s HSI, copilot’s RMDI, and Nav’s BDHI 2
Copilot’s RMDI and Nav’s BDHI 2 switches to AHRS 1
Pilot’s HSI switches to AHRS 1, depending on 6 pack selection
What does moving the Compass Select Switch to COPILOT ON ALT do?
Removes AHRS 1 from copilot’s HSI, pilot’s RMDI, and Nav’s BDHI 1
Pilot’s RMDI and Nav’s BDHI 1 switches to AHRS 2
Copilot’s HSI switches to AHRS 2, depending on 6 pack selection