MD-11 Flight Crew Operations Manual
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APU Chapter APU
Alerts Section 40
APU.40.1
APU.40 APU-Alerts
NOTE: The associated cue switch is shown in parenthesis (XXX)
following the alert.
Red Boxed Alerts (Level 3)
APU FIRE (ENG) - APU fire or air manifold fail conditions in APU
compartment.
Amber Boxed Alerts (Level 2)
GEN APU OFF (ELEC) - APU generator is off (manual mode).
Amber Alerts (Level 1)
APU AUTO SHUTDOWN (ENG) - The APU has automatically shut down.
APU DOOR DISAG (ENG) - The APU inlet/exhaust door position is not in
the commanded position.
APU FAIL (ENG) - The APU has automatically shut down due to a failure.
A restart should not be attempted.
APU FAULT (ENG) - There is a fault in the APU control circuit. APU
operation may not be affected.
APU FSO NOT CLSD (FUEL) - The APU fuel shutoff valve did not close
following normal or emergency shutdown.
APU FUEL PRES LO (ENG) - APU fuel pressure is low.
APU MAINT DOOR (ENG) - The APU DOOR switch on the upper
maintenance panel is in the OPEN position and the APU inlet door is
open.
APU STARTER FAULT (MAINT) - An APU starting system fault exists and
the APU should not be started. If APU is already running, may continue
to operate.
EPGS FAULT (MAINT) - A fault exists in the SMOKE switch circuit, an
APU generator fault exists, or a generator (engine or APU) auto reset has
been used.
GEN APU OFF (ELEC) - The APU generator has been automatically turned
off by the electrical system due to a fault or the APU FIRE handle has
been pulled.
SEL APU AIR OFF (AIR) - APU air switch is on and cabin is pressurized.
October 02, 2006
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