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<strong>TM</strong> 1-<strong>1520</strong>-<strong>248</strong>-<strong>CL</strong><br />
11. TGT RIGHT key ⎯ Press.<br />
12. Target ⎯ Perform a right pedal turn at no<br />
more than 5° per second to position<br />
target greater than 90° to the left of<br />
helicopter.<br />
13. TGT LEFT ⎯ Press.<br />
14. STORE key ⎯ Press to load these<br />
values into nonvolatile memory, as<br />
desired.<br />
15. MMS mode select switch ⎯ PREPNT.<br />
Prepoint the target with wide field of view<br />
selected and verify airborne cal accuracy<br />
by verifying that the target is within<br />
narrow field of view area.<br />
NOTE<br />
• Failure of airborne cal are usually very<br />
obvious. When step 15 is completed and<br />
the target is not even close, sequence<br />
through the flight plan back to correct<br />
target and repeat airborne cal beginning<br />
at step 3.<br />
• If step 15 reveals the target is close but<br />
not within narrow FOV or if an azimuth<br />
error exists but elevation is good, an<br />
EGI heading error could be the cause. In<br />
this event, repeat the entire airborne cal<br />
beginning at step 1.<br />
MANUAL DRIFT COMPENSATION<br />
1. MMS mode select switch ⎯ PREFLT.<br />
2. SETUP key ⎯ Press.<br />
3. MDC key ⎯ Press to ON.<br />
P-25
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