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AFTER STARTING APU (CONT) | Up
TM-1-1520-238-MTF Maintenance Test Flight Manual Helicopter Attack
AH-64A Apache | Next
d. Autodrift null check |
TM 1-1520-238-MTF
2-29
PROCEDURE
TROUBLESHOOTING
REFERENCE
AFTER STARTING APU (CONT)
(7) INTR LT INST control – On.
Check reticle brightness
corresponds to control position
through full range. Then set as
desired.
(8) Align HMD reticle with BRU.
(9) HMD BRSIT switch – Actuate
then release.
(10) BRSIT IHADSS switch – OFF.
(11) INTR LT INST control – As
desired.
(12) SIGHT SEL switch – As
required.
*22. TADS – Complete operational checks
and boresight as required.
a. Grayscale adjust check:
(1) GS switch – Actuate, Verify
symbology replaced by
grayscale on HOD.
(2) ORT BRT and CONT controls –
Actuate through full range and
adjust for optimum scaling.
(3) HDD switch – Actuate. Repeat
steps (1) and (2) above. Return
to HOD operations.
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