TM 55-1510-215-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
h. Repeat entire procedure for remaining voice security sets
(TSE C/KY-58).
*19. Gyromagnetic compass sets (KCS 305 and KCS 55A) - Check
as follows:
a.
FREE/SLAVE switches - As desired.
b.
All operable aircraft systems shall be in normal operation.
c.
Operate aircraft on four headings approximately 90° apart
over known ground references.
d.
Verify the following:
(1)
HSI and RMI headings agree with the known
heading within + 4 degrees.
(2)
HSI headings agree within + 2 degrees.
(3)
RMI headings agree K20 within ± 2
degrees.
*20. ADF radio set (KDF 806) - Check as follows:
a. NAV B switch (audio control panel - ON).
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