Super 80 Professional – AOM
MISCELLANEOUS
Section 19 Page 8
Super 80 Professional – Aircraft Operating Manual
Coolsky, 2018
Electrical Warnings
APU GEN OFF LIGHT
Comes on to indicate APU is operating but
APU generator is not in use. MASTER
CAUTION lights also come on.
AC BUS OFF LIGHT (L, R)
Comes on to indicate generator bus is not
powered. MASTER CAUTION lights also come
on.
GEN OFF LIGHT (L, R)
Comes on to indicate generator relay is
open, disconnecting generator from its bus.
MASTER CAUTION lights also come on.
AC CROSSTIE LOCKOUT
Comes on to indicate AC crosstie relay is
locked open and automatic AC crosstie is
inoperative. MASTER CAUTION lights also
come on.
BATTERY OFF LIGHT
Amber light that comes on when Battery
switch is in the OFF position.
DC BUS OFF
Comes on to indicate either left or right DC
bus is not powered. MASTER CAUTION lights
also come on.
Engine Warnings
ENG SYNC ON
Comes on to indicate ENG SYNC switch is
selected to N
1
or N
2
when landing gear
handle is in the down position.
START VALVE OPEN (L, R)
Comes on to indicate the engine starter
valve is open, allowing bleed air to flow into
the compressor stage of the turbine.
INLET FUEL PRESS LO LIGHT (L, R)
Comes on to indicate low fuel supply
pressure at the engine. Light also comes on
when engine is operating on suction feed.
MASTER CAUTION Lights also come on.
CTR FUEL PRESS LO
Comes on to indicate low fuel pressure from
the center tank pumps. This is usually a result
of the center tank becoming empty.
ART INOP
Comes on to indicate a failure has been
detected in the ART system, or the ART
switch is in the OFF position.
CSD OIL PRESS LOW LIGHT (L, R)
Comes on to indicate oil pressure in CSD is
below operating limits. MASTER CAUTION
lights also come on.
