BEFORE TAXIING (FRONT COCKPIT)
Communication and Navigation Equipment
On and Check
Emergency Attitude Indicator
Set
Clearance to Taxi From WSO
Reference System Selector
PRIM
Before taxiing (rear cockpit)
Communication and Navigation Equipment
On & Check
If the inertial navigation set has not been previously aligned for heading memory, attitude reference can be obtained by performing a coarse alignment (ALIGN - wait 40 seconds - NAV)