AFTER STARTING APU (CONT)
g. ACM switch ACM. Verify no
excessive change in image quality.
h. ACQ SEL switch OFF. Verify
proper turret response to head
movement. No excessive blooming
i. Image registration Check.
(1) Align crewmembers LOS
forward to the 12 oclock
(2) Select a reference object
approximately 90 feet in front of
The allowable registration error is 1 foot at
90 feet. The center open position of the
LOS reticle is equivalent to 1 foot at 90 feet.
(3) Check registration (alignment
differential) between the
thermal image and reference
object in azimuth.
j. ACM switch As desired.
k. ACQ SEL switch As required.
24. Sensor changeover Check as follows:
a. Pilots changeover check: