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A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SPECIAL OPERATIONS
PRELIMINARY PAGES - TABLE OF CONTENTS
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A318/A319/A320/A321 FLEET PRO-SPO-PLP-TOC P 4/4
FCOM 19 AUG 10
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SPECIAL OPERATIONS
FLIGHT WITHOUT CABIN PRESSURIZATION
A318/A319/A320/A321 FLEET PRO-SPO-20 P 1/18
FCOM 19 AUG 10
GENERAL
Applicable to: ALL
The aircraft may fly without cabin pressurization because of an aircraft system deficiency (see MEL)
or after a decompression in flight. The pilot's choice of flight level and airspeed depends on the
cause of the depressurization, the distance to fly, the topographic conditions and the meteorological
conditions.
OXYGEN REQUIREMENTS
Applicable to: ALL
CREW MEMBERS
See FAR 121.329 or JAR-OPS 1.770
PASSENGERS
For flight at cabin pressure altitudes above 10 000 ft, up to and including 14 000 ft, there must be
enough oxygen to supply 10 % of the passengers for the flight at those altitudes that lasts more
than 30 min.
For flight at cabin pressure altitudes above 14 000 ft, up to and including 15 000 ft, there must be
enough oxygen for 30 % of the passengers.
For flight at cabin pressure altitudes above 15 000 ft, there must be enough oxygen for all
passengers.
FLIGHT PLANNING AND EXECUTION
Applicable to: ALL
ALTITUDE
Flight route planning should consider the above-stated restriction in cabin altitude. If cabin
altitude exceeds 9 550 ± 350 ft, the EXCESS CAB ALT warning on the ECAM will be activated.
When above 14 000 ft, the passenger oxygen masks will drop automatically. Therefore, the
recommended maximum altitude for prolonged flight is FL 100. The minimum altitude should be
selected by respecting :
‐ The Minimum Safe Altitude (MSA),
‐ Turbulence, which is uncomfortable for passengers and,
‐ Low Outside Air Temperature (OAT), which can be uncomfortable for passengers when the
cabin is ventilated by ram air only.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SPECIAL OPERATIONS
FLIGHT WITHOUT CABIN PRESSURIZATION
A318/A319/A320/A321 FLEET PRO-SPO-20 P 2/18
FCOM 19 AUG 10
Applicable to: ALL
AIRSPEED
If decompression is due to structural damage, consider airspeed reduction. Use slats and flaps, as
necessary, to establish low speed conditions. In addition, turbulent conditions are uncomfortable
for passengers, and gust response should be minimized by reducing airspeed.
Applicable to: ALL
CLIMB AND DESCENT RATE
Takeoff must be performed normally, and the rate of climb must be limited to about 500 ft/min, to
ease the pressure change felt by passengers and crew.
Likewise, the rate of descent must be limited to about 1 000 ft/min, except for the final approach
which must be performed normally. Notify the ATC of any performance deficiency by a remark in
the flight plan.
Applicable to:
, ,
MSN,,,,
EMERGENCY DESCENT IN CASE OF RAPID DEPRESSURIZATION
In the event of depressurization, oxygen is supplied to passengers through an individual mask.
The capacity of the units is such that the aircraft must descend and remain below the following
profile.
Applicable to:
EMERGENCY DESCENT IN CASE OF RAPID DEPRESSURIZATION
In the event of depressurization, the cabin’s fixed oxygen system supplies oxygen, stored in
interconnected cylinders. The flow rate is controlled by an altimetric flow regulation device within
each mask container.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SPECIAL OPERATIONS
FLIGHT WITHOUT CABIN PRESSURIZATION
A318/A319/A320/A321 FLEET PRO-SPO-20 P 3/18
FCOM 19 AUG 10
Depending on the number of masks used, and on the altitude flown during the descent, the
following chart provides the oxygen supply time.
The oxygen is supplied for :
‐ 30 s at FL 400
‐ Descent at 5 500 ft/min from FL 400 to cruise altitude
‐ Descent at 7 500 ft/min cruise altitude to FL 100
‐ Flight time at a selected cruise altitude read on the chart.
Note: The pax oxygen system is designed such that, for a constant pressure and a given
number of pax masks in use, the flight time increases for flight levels above 140 up to
180 and decreases for altitudes above.
In the event of depressurization, oxygen is supplied to the mobile crew rest compartment through
individual modules. The capacity of the modules is such that the aircraft must descend and remain
below the following profile :
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
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A320机组操作手册FLIGHT CREW OPERATING MANUAL 14(14)
