TM 1-1510-218-10
2-119
the individual warning annunciator lights. Table 2-12
provides a list of causes for illumination of the
individual caution/advisory annunciator lights. In
frontal view, both panels present rows of small opaque
rectangular indicator lights. Word printing on each
indicator identifies the monitored function situation or
fault condition, but cannot be read until the light is
illuminated. The bulbs of all annunciator panel lights
are tested by activating the ANNUNCIATOR TEST
switch, which is located on the right side of the
caution/advisory panel. The system is protected by
two 5-ampere circuit breakers, placarded ANN PWR
and ANN IND, on the overhead circuit breaker panel,
Figure 2 -16. The annunciator system lights are
dimmed when the MASTER PANEL LIGHTS switch is
actuated and the pilot's flight instrument lights are on.
The lights are automatically reset to maximum
brightness if any of the following conditions exist.
(1) The
main
aircraft
power
(both
dc
generators) are off.
(2) The INST INDIRECT LIGHTS switch is
on.
(3) The MASTER PANEL LIGHTS switch is
off.
(4) The MASTER PANEL LIGHTS switch is
ON and the PILOT INST LIGHTS switch is OFF.
b. Annunciator Panels D2 T .
NOTE T2
On C-12T2 aircraft equipped with the
Aviation Night Vision Imaging System
(ANVIS), the annunciator lighting is ANVIS
green and ANVIS yellow . Both pilot and
copilot sides have a master warning light
(ANVIS yellow) and master caution light
(ANVIS green) with a PRESS TO TEST
switch
located
in
the
right
inboard
subpanel
section.
The
warning
annunciator
panel
is
located
in
the
glareshield immediately above the fire
extinguisher
system
controls
on
the
instrument panel. The caution/advisory
panel is located on the subpanel. In other
respects, the annunciator panels are as
described in the following paragraph.
Table 2-11. C-12 Warning Annunciator Panels
NOMENCLATURE
COLOR
CAUSE FOR ILLUMINATION
AIRCRAFT
EFFECTIVITY
C D1
#1 FUEL PRESS
Red
Fuel pressure failure on left side.
All
#2 FUEL PRESS
Red
Fuel pressure failure on right side.
All
L BL AIR FAIL
Red
Left bleed air warning line has melted or failed indicating
possible loss of #1 engine bleed air.
All
R BL AIR FAIL
Red
Right bleed air warning line has melted or failed, indicating
possible loss of #2 engine bleed air.
All
ALT WARN
Red
Cabin altitude exceeds 12,500 feet.
All
INST AC
Red
No AC power to engine instruments.
All
AP TRIM FAIL
Red
Trim wont run or running opposite direction commanded.
All
#1 CHIP DETR
Red
Contamination of #1 engine oil detected.
All
#2 CHIP DETR
Red
Contamination of #2 engine oil detected.
All
D2 T1
ALT WARN
Red
Cabin altitude exceeds 12,500 feet.
All
INSTR AC
Red
No AC power to engine instruments.
All
#1 FUEL PRESS
Red
Fuel pressure failure on left side.
All
A/P TRIM FAIL
Red
Trim wont run or running opposite direction commanded.
All
A/P DISC
Red
Autopilot is disconnected.
All
#2 FUEL PRESS
Red
Fuel pressure failure on right side.
All