TM 1-1510-233-CL
P-6
(8) GS and localizer off flags (Red X) ap-
pear.
(9) TEST will appear in the upper corner to
indicate that the flight director mode
selector lamp is good.
b. EHSI:
(1) DTRK, NM, GSPD, and HDG replaces
with dahes.
(2) HDG FAIL annunciator appears.
(3) Course indicator and glideslope off
flags appear.
c. AP disconnect horn sounds after 5-7 sec-
onds.
NOTE
Preflight test of the composite mode will
cause the same results as the above tests,
except digital heading readouts will be re-
placed with red FAIL indication, and ex-
panded localizer scale and pointer will be
removed.
A localizer frequency must be tuned on both
NAV receivers to enunciate ILS comparitor
monitor.
EFIS test is inhibited during glidescope
capture.
