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‐ Flexible takeoff is not permitted on contaminated runways.
‐ The operator should check the maximum thrust (TOGA) at regular intervals in order to detect any
engine deterioration, or maintain an adequate engine performance monitoring program to follow up
the engine parameters.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF CHARTS - FLEXIBLE TAKEOFF (TEMPERATURE ENTRY)
A318/A319/A320/A321 FLEET PER-TOF-TOC-14-30 P 5/6
FCOM 19 AUG 10
REQUIREMENTS
Applicable to: ,
, MSN
‐ Thrust must not be reduced by more than 25 % of the full rated takeoff thrust.
‐ The flexible takeoff N1 cannot be lower than the Max climb N1 at the same flight conditions.
The FADEC takes the above two constraints into account to determine flexible N1.
‐ The flexible takeoff thrust cannot be lower than the Max Continuous thrust used for the final takeoff
flight path computation (at ISA +40).
This constraint limits the maximum flexible temperature at ISA +43 (58 °C at sea level).
‐ The flexible temperature cannot be lower than the flat rating temperature, TREF (ISA +15), or the
actual temperature (OAT).
‐ Flexible takeoff is not permitted on contaminated runways.
‐ The operator should check the maximum thrust (TOGA) at regular intervals in order to detect any
engine deterioration, or maintain an adequate engine performance monitoring program to follow up
the engine parameters.
REQUIREMENTS
Applicable to:
‐ Thrust must not be reduced by more than 25 % of the full rated takeoff thrust.
‐ The flexible takeoff N1 cannot be lower than the Max climb N1 at the same flight conditions.
The FADEC takes the above two constraints into account to determine flexible N1.
The above two constraints also limit the maximum flexible temperature at ISA +60 (75 °C at sea
level).
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF CHARTS - FLEXIBLE TAKEOFF (TEMPERATURE ENTRY)
A318/A319/A320/A321 FLEET PER-TOF-TOC-14-30 P 6/6
FCOM 19 AUG 10
The flexible temperature cannot be lower than the flat rating temperature, ‐ TREF (ISA +30), or the
actual temperature (OAT).
‐ Flexible takeoff is not permitted on contaminated runways.
‐ The operator should check the maximum thrust (TOGA) at regular intervals in order to detect any
engine deterioration, or maintain an adequate engine performance monitoring program to follow up
the engine parameters.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF CHARTS - FLEXIBLE TAKEOFF (TEMPERATURE ENTRY)
A318/A319/A320/A321 FLEET PER-TOF-TOC-14-40 P 1/2
FCOM 19 AUG 10
RECOMMENDATION
GENERAL
Applicable to: ALL
• 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 (tailwind) of the takeoff chart while remaining within the same
configuration and looking for the same actual takeoff weight at lower temperature.
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).
TAKEOFF PROCEDURE
Applicable to:
,
,
MSN,,,,
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
To be continued on next page
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF CHARTS - FLEXIBLE TAKEOFF (TEMPERATURE ENTRY)
A318/A319/A320/A321 FLEET PER-TOF-TOC-14-40 P 2/2
FCOM 19 AUG 10
Continued from previous page
CONDITIONS PROCEDURE REASON
Windshear expected along takeoff
　
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