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Table 4–1. Power Plants Controls And Indicators (cont) | Up
TM-1-1520-238-T-4 Army Model AH-64 Helicopter (NSN
1520-01-106-9519) (EIC: RHA) Manual | Next
Table 4–1. Power Plants Controls And Indicators (cont) |
TM 1-1520-238-T-4
4–15
4–6
CONTROLS AND INDICATORS (cont)
4–6
Table 4–1.
Power Plants Controls And Indicators (cont)
Pilot EMERG PWR CHK OVSP TEST Panel (cont)
SWITCH/INDICATOR
POSITION
FUNCTION
CKT B switch
ENG 1
Simulates an overspeed condition of 119–120% to test
protection system.
OFF
Disables CKT B switch.
ENG 2
Simulates an overspeed condition of 119–120% to test
protection system.
EMERG PWR indicator
GREEN
Lights when availability of emergency electrical power
from the ENG START circuit breaker.
M58-054
EMERG PWR
INDICATOR
CKT A SWITCH
CKT B SWITCH
Pilot EMERG PWR CHK OVSP TEST Panel
Pilot ANTI ICE Panel
SWITCH/INDICATOR
POSITION
FUNCTION
ENG 1 indicator
GREEN
Lights when engine 1 anti–ice subsystem is operating
properly.
ENG 2 indicator
GREEN
Lights when engine 2 anti–ice subsystem is operating
properly.
ON/OFF switch
ON
Energizes NGB heaters and anti–ice valves.
OFF
De–energizes anti–ice solenoids. Bleed air is ported to
cowling via spring–loaded valves.
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