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the engine parameters.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF CHARTS - FLEXIBLE TAKEOFF (WEIGHT ENTRY)
A318/A319/A320/A321 FLEET PER-TOF-TOC-20-40 P 1/2
FCOM 19 AUG 10
RECOMMENDATION
GENERAL
Applicable to: MSN,
• In order to extend engine life and save maintenance costs, it is recommended to use flexible thrust
reduction.
• However, to improve the takeoff performance, the thrust can be increased by selecting a lower
flexible temperature.
Using the same takeoff chart, for a given weight it is possible to :
‐ Select a temperature lower than the maximum determined one and keep the speeds defined at
maximum temperature or,
‐ Move towards the left side of the takeoff chart (tailwind) while looking for the same actual takeoff
weight.
This produces a lower flexible temperature and, in general, lower takeoff speeds (V1/VR/V2).
Using one of the two above possibilities, check that the selected temperature is greater than the
actual temperature (OAT) and greater than the flat rating temperature (TREF).
GENERAL
Applicable to:
, ,
MSN,,
• In order to extend engine life and save maintenance costs, it is recommended to use flexible thrust
reduction.
• However, to improve the takeoff performance, the thrust can be increased by selecting a lower
flexible temperature.
Using the same takeoff chart, for a given weight it is possible to :
Select a temperature lower than the maximum determined one ‐ and keep the speeds defined at
maximum temperature or,
‐ Move towards the left side of the takeoff chart (tailwind) while remaining with the same
configuration and looking for the same actual takeoff weight.
This produces a lower flexible temperature and, in general, lower takeoff speeds (V1/VR/V2).
Using one of the two above possibilities, check that the selected temperature is greater than the
actual temperature (OAT) and greater than the flat rating temperature (TREF).
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF CHARTS - FLEXIBLE TAKEOFF (WEIGHT ENTRY)
A318/A319/A320/A321 FLEET PER-TOF-TOC-20-40 P 2/2
FCOM 19 AUG 10
TAKEOFF PROCEDURE
Applicable to: ALL
Depending on environmental takeoff conditions, the following procedure is recommended.
CONDITIONS PROCEDURE REASON
Dry or wet well paved runway Use the flap setting giving the highest flexible
temperature.
When flexible temperature difference between
two flap settings is low, use the highest flap
setting.
Extend engine life and save
maintenance costs.
High altitude takeoff Use CONF2/CONF3 Improve comfort
Badly paved runway
or
Accelerate stop distance limited
runway
Use CONF2/CONF3
or
Move towards left side of the takeoff chart
Improve comfort
Improve stopping distance
Windshear expected along takeoff
path
Use maximum thrust Maintain acceleration capability
Contaminated runway Use maximum thrust
(flex forbidden)
Improve stopping distance
Decrease time on runway.
Required by regulations.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF CHARTS - FLEXIBLE TAKEOFF (WEIGHT ENTRY)
A318/A319/A320/A321 FLEET PER-TOF-TOC-20-50 P 1/14
FCOM 19 AUG 10
DETERMINATION OF FLEXIBLE TAKEOFF TEMPERATURE AND SPEEDS
GENERAL
Applicable to:
, ,
MSN,,
Before determining the flexible temperature, calculate the maximum permissible takeoff weight
(Refer to PER-TOF-TOC-18-30 MAXIMUM STRUCTURAL TAKEOFF WEIGHT) and ensure that the
actual takeoff weight is lower than the determined maximum takeoff weight.
For a given wind value, enter the RTOW chart with the actual takeoff weight to read the flexible
temperature and associated speeds. It is reminded that the takeoff weight is the sum of the weight
entry and the delta weight displayed in each box. It is allowed to interpolate between two consecutive
rows and/or columns for weight and for wind values not displayed on the chart.
GENERAL
Applicable to: MSN,
4473
Before determining the flexible temperature, calculate the maximum permissible takeoff weight
(Refer to PER-TOF-TOC-18-30 MAXIMUM STRUCTURAL TAKEOFF WEIGHT) and ensure that the
actual takeoff weight is lower than the determined maximum takeoff weight.
• For a given configuration and wind value, enter the RTOW chart with the actual takeoff weight
to read the flexible temperature and associated speeds. It is reminded that the takeoff weight is
the sum of the weight entry and the delta weight displayed in each box. It is allowed to interpolate
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A320机组操作手册FLIGHT CREW OPERATING MANUAL 7(69)
