Section VII
TABLE 7-2A. FLIGHT LINE CERTIFICATION PROCEDURE (CONT)
If Indication
Circuit or
Normal
Is Abnormal
Function Tested
Indication
Procedure
Step
10
Part
I
(cont)
POWER MUST BE
REMOVED DURING
THE FOLLOWING
OPERATION IF
CONNECTOR OF
MAGNETIC AZI-
MUTH REFERENCE
DETECTOR IS
DISCONNECTED.
Remove MARD from top
of Turntable plate and
mount upside down so
that telescope is below
Turntable plate.
Rotate Turntable to sight
same target.
Set azimuth scale to
target bearing (B).
Rotate Turntable to
heading of 0, 90, 180, and
270 degrees. Record
ERROR readout indication
at each heading.
Note
Disregard HEADING
readout indications.
Add the four errors alge-
braically and divide the sum
by four.
Record this value as index
error (I2).
Note
The remainder of
this step must be
completed witbin 30
minutes to minimize
errors due to shifting
of earth's magnetic
field.
7-8G
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