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CANOPY ANTI ICE FAIL Information/system status.
ENG 1 ANTI ICE Information/system status.
ENG 2 ANTI ICE Information/system status.
Change 3 9-19
TM 1-1520-238-10
Table 9-1. Caution/Warning Light Corrective Actions - continued
WORD SEGMENT CORRECTIVE ACTION
APU ON Information/system status.
APU FAIL Information/system status.
- (SPARE) LAND AS SOON AS POSSIBLE.
CPG CAUTION WARNING PANEL
ONLY:
PRI HYD Coordinate actions with pilot.
UTIL HYD Coordinate actions with pilot.
MAIN XMSN 1 Coordinate actions with pilot.
MAIN XMSN 2 Coordinate actions with pilot.
ENG 1 Coordinate actions with pilot.
ENG 2 Coordinate actions with pilot.
ELEC SYS FAIL Coordinate actions with pilot.
ENG ANTI ICE Coordinate actions with pilot.
VOICE CIPHER Information/system status.
FUEL XFR (Green) Information/system status.
Modified C/W panel
FUEL XFR (Amber) Evaluate remaining fuel per cell.
Modified C/W panel
X FEED (Green) Information/system status.
Modified C/W panel
X FEED (Amber) Achieve safe single engine airspeed and restore previous switch
Modified CIW panel position. If caution segment extinguishes,
continue mission. If caution segment remains illuminated be
prepared for a single engine flame out. LAND AS SOON AS
PRACTICABLE.
9-20 Change 3
TM 1-1520-238-10
Change 6 9-21
Section II. MISSION EQUIPMENT
9.16 MISSION EQUIPMENT FAILURES AND
MALFUNCTIONS.
Emergency operation of mission equipment is contained
in this section, insofar as its use affects safety of
flight.
9.16.1 Wing Stores Jettison.
CAUTION
Do not jettison Hellfire missile if
hangfire is in progress (i.e. missile is
still ignited).
a. Armament Wing Stores.
1. Airspeed -- 120 KIAS maximum.
2. Selected STORES JETT switches -- Activate.
OR
3. ST JETT -- Press.
b. External Fuel Wing Stores.
1. Airspeed -- 100 KIAS maximum.
2. Selected STORES JETT switches -- Activate.
OR
3. ST JETT -- Press.
9.16.2 ENCU Malfunction.
1. ENCU switch -- OFF.
2. ECS panel -- STBY FAN if desired.
3. Emergency crew station ventilator door --
Open if desired.
9.16.3 PNVS/IHADSS Failure.
WARNING
If night or simulated night NOE,
reaction to the following malfunctions
must be immediate. Exit the
NOE environment immediately.
NOTE
During rolling maneuvers, a phenomena
known as AC coupling may degrade the
PNVS imagery. Generally, this image degradation
will worsen as the bank angle is
increased. To reduce the adverse affects of
AC coupling, the pilot should reduce the
amount of sky visible within the PNVS
field of view by viewing the terrain below
the horizon.
a. PNVS Failure.
Pilot NVS select switch -- TADS. Switch over to TADS
WFOV. FLIR image should occur in about 3 seconds.
TADS slew rates are noticeably slower in azimuth than
PNVS. Some gain and level adjustment is usually necessary
for optimum image.
NOTE
In the event of a GEN-1 failure, the automatic
power transfer to GEN-2 will result
in gray-scale selection in the HDU on
some aircraft. Should this condition occur,
resetting the VID SEL switch to TADS
will restore normal video.
b. IHADSS/HDU Failure.
WARNING
In the event of IHADSS failure with
gun selected, the gun will be commanded
to the fixed forward position.
Once in this position, the gun
can still be fired without having to
re--action the gun.
Pilot
1. Establish visual flight.
VDU control switch -- PLT.
ACQ SEL -- NVS FXD.
OR
CPG
CPG SIGHT SEL switch -- NVS.
PLT/GND ORIDE switch -- ORIDE.
NVS select switch -- PNVS or TADS.
CPG assume helicopter control.
9.16.4 Dual IHADSS/HDU Failure.
Pilot
Establish visual flight.
VDU control switch -- PLT.
3. ACQ SEL -- NVS FXD.
OR
CPG
1. Establish visual flight.
2. CPG assume helicopter control.
TM 1-1520-238-10
9.16.5 Engine Alternator Malfunction.
Complete failure of the alternator
or of the winding provided
NG speed indicated signal will activate
the ENG OUT warning light
and audio. The pilot shall check
the Nr gauge indication and be prepared
to carry out the actions for a
high side failure. Thereafter, reference
TGT and OIL PSI ENG, along
with FUEL PSI ENG and OIL PSI
NOSE GRBX segment lights of the
affected engine.
Following a complete failure
of an alternator, operation of the
corresponding engine and all indications
from engine instruments
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