TM 1-1510-224-10
(5)
Leg
length
in
NM
Enter
into
scratchpad.
(6)
L2 line selection switch Depress to
enter LEG LENGTH.
(7)
L3 line selection switch Depress to
select LEFT or RIGHT.
(8)
Offset distance in NM Enter into
scratchpad.
(9)
L4 line selection switch Depress to
enter OFFSET.
e.
Waypoint move mode Program as follows:
(1)
True bearing Enter into scratchpad.
(2)
RI line selection switch Depress to
enter BEARING.
(3)
Range in NM Enter into scratchpad.
(4)
R2 line selection switch Depress to
enter RANGE.
«26. Avionics Check as follows:
a.
VHF comm (#1 and #2) Press TEST and
observe the following:
(1)
Normal Dashes displayed in active
display and 00 in preset display.
(2)
Fault Flag in active display and a two
digit fault code in preset display.
b.
VHF navigation receivers (#1 and #2) Test
as follows:
(1)
VOR self test/marker beacon test:
(a)
Tuning knobs (NAV control unit)
Select a VOR frequency.
(b)
VOR/localizer
pushbutton
selector
switch
(display
controller) Select VOR 1 or VOR
2.
(c)
Single needle bearing pointer
source selector switch (display
controller) VOR 1.
(d)
Double needle bearing pointer
source selector switch (display
controller) VOR 2.
(e)
Course knob (EHSI) Rotate until
pointer indicates 0 degrees.
(f)
TEST switch (NAV control unit)
Depress.
(g)
NAV flag on the EHSI - Will come
into view. After two seconds, the
flag will go out of view, the EHSI
course deviation bar will center,
and a TO indication will appear.
The bearing pointers will indicate
a 0 degree magnetic bearing.
The VIR-32 will return to normal
after 15 seconds.)
(h)
EHSI Check for three marker
indications and listen for a 30 Hz
tone on audio channel of NAV
system.
(2)
ILS self test (NAV 1 and NAV 2):
(a)
Tuning knobs (NAV control unit)
Select a localizer frequency.
(b)
TEST switch (NAV control unit)
Depress.
(c)
NAV and GS flags on EHSI Will
come into view. After 3 seconds,
the flags will go out of view, the
EHSI course deviation bar will
deflect right 2/3 full scale, and the
glide slope pointer will deflect
down 2/3 full scale.
(d)
VIR-32 Will return to normal after
15 seconds.
(3)
ADF receiver test:
(a)
Power and mode switch On.
(b)
Tuning knobs Tune a nearby
NDB,
compass
locater,
or
broadcast station.
(c)
EFIS display controller Select
ADF on single needle pointer
bearing source selector switch.
(d)
TEST switch Depress. Bearing
pointer will rotate 90 degrees
from
previous
indication.
Release TEST switch and verify
bearing
pointer
returns
to
previous indication.
(4)
TACAN/DME indicator system:
(a)
TACAN/DME Will conduct a self
test for 3 seconds after powerup.
After 3 seconds, check for SELF
TEST PASS or SELF TEST FAIL
(with a fail message number).
(5)
Transponder (APX-100):
(a)
MASTER switch STBY.
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