TM 55-1510-222-MTF
P R O C E D U R E
T R O U B L E S H O O T I N G
R E F E R E N C E
G. AVIONICS FLIGHT CHECKS (CONT)
left-hand
display
and
present position longitude
in the right-hand display.
Both display indications
are to a tenth of a minute.
(3) HOLD key - Depress. Key
will illuminate. Latitude
and longtitude displays
will freeze at the values
which were present when
the HOLD key was de-
pressed.
NOTE
While the HOLD key is illuminated. TA-
CAN. GPS, and data link updates are inhib-
ited.
g. Latitude and longitude iner-
tial position - Check as fol-
lows:
(1)
Data
selector
-
L/L
WYPT
(HOLD
should still be illuminat-
ed).
(3) Left-hand and right-hand
displays - Read latitude
and longitude of present
position to a tenth of a
degree. Compare with val-
ues noted in latitude and
longitude position check
above.
(3) INSERT/ADVANCE key
- Depress.
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