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A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF DATA - NET TAKEOFF FLIGHT PATH
A318/A319/A320/A321 FLEET PER-TOF-TOD-50 P 56/60
FCOM 19 AUG 10
REMOTE OBSTACLE CLEARANCE CONF 3
Applicable to:
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF DATA - NET TAKEOFF FLIGHT PATH
A318/A319/A320/A321 FLEET PER-TOF-TOD-50 P 57/60
FCOM 19 AUG 10
Note: In case of ascending runway, increase obstacle height by 50 ft per percent runway slope.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF DATA - NET TAKEOFF FLIGHT PATH
A318/A319/A320/A321 FLEET PER-TOF-TOD-50 P 58/60
FCOM 19 AUG 10
REMOTE OBSTACLE CLEARANCE CONF 3
Applicable to: MSN,
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF DATA - NET TAKEOFF FLIGHT PATH
A318/A319/A320/A321 FLEET PER-TOF-TOD-50 P 59/60
FCOM 19 AUG 10
Note: In case of ascending runway, increase obstacle height by 50 ft per percent runway slope.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF DATA - NET TAKEOFF FLIGHT PATH
Intentionally left blank
A318/A319/A320/A321 FLEET PER-TOF-TOD-50 P 60/60
FCOM 19 AUG 10
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
RUNWAY CONTAMINATION - GENERAL
A318/A319/A320/A321 FLEET PER-TOF-CTA-10 P 1/2
FCOM 19 AUG 10
GENERAL
Applicable to: ALL
This section presents the recommendations of Airbus Industrie for operations from wet runways or
from runways which are covered with contaminants such as standing water, slush or snow.
CAUTION Take off from an icy runway is not recommended.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
RUNWAY CONTAMINATION - GENERAL
Intentionally left blank
A318/A319/A320/A321 FLEET PER-TOF-CTA-10 P 2/2
FCOM 19 AUG 10
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
RUNWAY CONTAMINATION - DEFINITIONS
A318/A319/A320/A321 FLEET PER-TOF-CTA-20 P 1/2
FCOM 19 AUG 10
DEFINITIONS
Applicable to: ALL
DAMP : A runway is damp when the surface is not dry, but when the water on it
does not give it a shiny appearance.
WET : A runway is considered as wet when the surface has a shiny appearance
due to a thin layer of water. When this layer does not exceed 3 mm depth,
there is no substantial risk of hydroplaning.
STANDING WATER : is caused by heavy rainfall and /or insufficient runway drainage with a
depth of more than 3 mm.
SLUSH : is water saturated with snow which spatters when stepping firmly on it. It is
encountered at temperatures around 5 °C and its density is approximately
0.85 kg/l (7.1 lb/US Gal).
WET SNOW : is a condition where, if compacted by hand, snow will stick together
and tend to form a snowball. Its density is approximately 0.4 kg/l
(3.35 lb/US Gal).
DRY SNOW : is a condition where snow can be blown if loose, or if compacted by hand,
will fall apart again upon release. Its density is approximately 0.2 kg/l
(1.7 lb/US Gal).
COMPACTED SNOW: is a condition where snow has been compressed (a typical friction
coefficient is 0.2).
ICY : is a condition where the friction coefficient is 0.05 or below.
The performance given in this chapter has been divided into two categories which are determined by
the depth of the contaminant. For each of these categories an equivalent depth of contaminant has
been defined for which the performance deterioration is the same.
1. WET RUNWAY and EQUIVALENT
Equivalent of a wet runway is a runway covered with or less than :
‐ 2 mm (0.08 in) slush
‐ 3 mm (0.12 in) water
‐ 4 mm (0.16 in) wet snow
‐ 15 mm (0.59 in) dry snow
2. CONTAMINATED RUNWAY
An equivalence between depth of slush and snow has been defined :
‐ 12.7 mm (1/2 in) wet snow is equivalent to 6.3 mm (1/4 in) slush
‐ 25.4 mm (1 in) wet snow is equivalent to 12.7 mm (1/2 in) slush
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
RUNWAY CONTAMINATION - DEFINITIONS
A318/A319/A320/A321 FLEET PER-TOF-CTA-20 P 2/2
FCOM 19 AUG 10
‐ 50.8 mm (2 in) dry snow is equivalent to 6.3 mm (1/4 in) slush
‐ 101.6 mm (4 in) dry snow is equivalent to 12.7 mm (1/2 in) slush
Note: 1. On a damp runway no performance degradation should be considered.
2. It is not recommended to take off from a runway covered with more than 4 in of dry
snow or 1 in of wet snow.
A318/A319/A320/A321 FLIGHT CREW
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