USE
BAT BUS
Will illuminate if:
1. The CWS circuit breaker on the battery bus circuit breaker panel in the FCP is open
2. If there is an actual loss of the battery bus (and the associated avionics buses)
3. The current limiter on the battery bus side has failed
GEN BUS
Will illuminate if:
1. CWS circuit breaker on the generator bus circuit in the FCP is open
2. If there is an actual loss of the generator bus (and the associated avionics buses)
PMU FAIL
Will illuminate for a PMU failure
GEN
Will illuminate if the Generator becomes inoperative
CKPT PX
Cockpit over-pressurization, pressure exceeds 3.9 to 4.0 psi
CANOPY
Canopy unlocked/unsafe
FUEL PX
Fuel pressure below 10 psi in the motive flow/return flow supply line
OIL PX
Will illuminate if:
1. Oil pressure at or below 15 psi
2. Oil pressure 15 - 40 psi for 5 seconds at idle
3. Oil pressure at or below 40 psi above idle
OBOGS FAIL
OBOGS system malfunction
CHIP
Engine chip detector indicates oil malfunction
CKPT ALT
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Why’d you pick me? Take 5 SHACK Points
HYDR FL LO
Hydraulic reservoir fluid level below 55 cubic inches (1 qt)
OIL PX
1. Oil pressure 15 - 40 psi at idle
2. Oil pressure 40 - 90 psi for 10 seconds above idle
BUS TIE
1. BUS TIE switch open
2. Bus tie inoperative
FUEL BAL
1. Fuel imbalance exceeds 30 pounds for 2 minutes
2. Fuel probe fail
3. EDM fail
PMU STATUS
1. PMU has detected and accommodated a fault in-flight
2. WOW (weight-on-wheels) switch failure
EHYD PX LO
Emergency hydraulic pressure at or below 2400 +/- 150 psi
TAD FAIL
Rudder trim aid device failure
OBOGS TEMP
OBOGS temperature above 200 °F
L FUEL LO
Left wing tank below approximately 110 pounds usable fuel
R FUEL LO
Right wing tank below approximately 110 pounds usable fuel
DUCT TEMP
Environmental duct or defog duct above 300 °F
IGN SEL
Ignition on
M FUEL BAL
FUEL BAL switch in MANUAL position
TRIM OFF
TRIM DISCONNECT switch activated
BOOST PUMP
BOOST PUMP selected by:
1. Switch
2. Starter relay
3. Low pressure switch
ANTI ICE
PROBES ANTI-ICE switch on
TAD OFF
Rudder trim aid device selected off
ST READY
PCL positioned for auto start