TM 1-1520-238-10
2-82
Table 2-4.
Pilot Caution/Warning Light Segments - continued
Word Segment
Illumination Parameter or Fault
Color
EXT PWR
AMBER
Access door to external power receptacle is open.
HOT BAT
AMBER
Battery temperature is in excess of 134 F (57 C), or a defective cell has
been detected. Battery charging is discontinued.
CHARGER
AMBER
Charger has failed to charge during a programmed charging cycle.
CHIPS MAIN XMSN
AMBER
Main transmission chip detector has detected metal fragments.
TEMP TR
AMBER
Tail rotor gearbox temperature is above 274 – 294 F (135 – 145 C).
CHIPS NOSE GRBX 2
AMBER
No. 2 engine nose gearbox oil contains metal fragments.
OIL PSI NOSE GRBX 2
AMBER
No. 2 engine nose gearbox oil pressure is below 26 – 30 psi.
OIL HOT NOSE GRBX 2
AMBER
No. 2 engine nose gearbox oil temperature is above 274 – 294 F
(135 – 145 C).
ASE
AMBER
One or more components of the automatic stabilization equipment is
inoperative; one or more of the SAS channels is inoperative or has been
selected OFF.
NOTE
Low fuel caution systems alert the crew that the fuel level in the tank has reached a specified level (ca-
pacity). Differences in fuel densities due to temperature and fuel type will vary the weight of the fuel re-
maining and the actual time the helicopter engine(s) may operate. Differences in fuel consumption rates,
aircraft attitude, and operational conditions of the fuel subsystem will also affect the time the helicopter
engine(s) may operate.
FUEL LOW FWD
AMBER
When light comes on, approximately 260 pounds of fuel remains in the
forward fuel cell.
FUEL LOW AFT
AMBER
When light comes on, approximately 210 pounds of fuel remains in the aft
fuel cell.
EXT EMP
AMBER
All external fuel tanks are empty.
REFUEL VALVE OPEN
AMBER
Refuel valve is open.
OIL PSI ACC PUMP
AMBER
Main transmission accessory gearbox oil pressure is below 26 – 30 psi.
TEMP INT
AMBER
Intermediate gearbox temperature is above 274 – 294 F (135 – 145
C).
CHIPS ENG 2
AMBER
No. 2 engine scavenge oil contains metal fragments.
OIL PSI ENG 2
AMBER
No. 2 engine oil pressure is below 25 psi.
OIL BYP ENG 2
AMBER
No. 2 engine oil filter is clogged, and bypass has begun.
FUEL BYP ENGINE 2
AMBER
No. 2 engine fuel filter is clogged, and bypass has begun.
