MD-11 Flight Crew Operations Manual
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Air -
Alerts
Air.40.2
AIR MANF TST FAIL (AIR) - A component of the air manifold failure
detection system has failed the automatic test.
AIR SYS 1/2/3 OFF (AIR) - Respective air system bleed is off. Associated
isolation valves are off. (System 1 isolation valves are 1-3 and 1-2,
system 2 valves are APU load control and 1-2 isolation, system 3 valve
is 1-3).
AIR SYS MANUAL (AIR) - Air system is in manual mode.
AIR SYS TEST FAIL (AIR) - A component of the air system has failed the
automatic test.
AIR 1-2/1-3 ISOL DISAG (AIR) - The respective pneumatic isolation valve
is not in the commanded position.
AVNCS FAN OVRD (AIR) - The avionics exhaust fan, normally off in
flight, is operating. The fan turns on automatically when cooling flow
goes below normal, or may be manually selected on.
BLEED AIR 1/2/3 OFF (AIR) - Associated engine bleed valve is closed with
associated air system pressurized from another source.
BLEEDS NOT OFF (AIR) - Packs off for takeoff is selected (anti-ice off) and
the bleeds are not selected off prior to advancing the throttles for takeoff.
CABIN PRES RELIEF (AIR) - Cabin differential pressure has exceeded 8.76
psi and pressure relief valve(s) is open.
CAB PRES SYS MAN (AIR) - Cabin pressurization system is in manual.
CABIN INFLO LO (AIR) - Cabin altitude is climbing, outflow valve is
closed and one or more packs are commanded ON. If AIR SYSTEM
SELECT switch is in AUTO, the AVNCS FAN switch will revert to
OVRD and remain in override unitl aircraft is on the ground.
CABIN RATE (AIR) - Cabin rate of climb/descent exceeds limits.
CAC AIR FLO OFF (AIR) - All CAC fans are inoperative. There is no CAC
cooling.
CAC MANF DECAY CK (AIR) - CAC air manifold air pressure decay check
in progress.
CPC FAULT (MAINT) - One of the 2 cabin pressure controllers is
inoperative and requires ground maintenance.
CRG FLO AFT/FWD DISAG (AIR) - Associated cargo compartment
ventilation does not agree with switch position.
CRG TEMP CTL OFF (AIR) - FWD and/or AFT TEMP selector in OFF.
October 02, 2006
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