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A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF CHARTS - MTOW CALCULATION (WEIGHT ENTRY)
A318/A319/A320/A321 FLEET PER-TOF-TOC-18-10 P 2/26
FCOM 19 AUG 10
If the lowest temperature and OAT are above TREF.
Obtain weight increment by multiplying Grad 2 by the difference in temperature between OAT
and lowest temperature. Add this weight increment to the maximum takeoff weight calculated
for the lowest temperature.
If the lowest temperature and OAT are below TREF.
Obtain weight increment by multiplying Grad 1 by the difference in temperature between OAT
and lowest temperature. Add this weight increment to the maximum takeoff weight calculated
for the lowest temperature.
If OAT is below TREF and lowest temperature is above TREF.
The weight increment is calculated in two steps. Step one is multiplying Grad 2 by temperature
difference between lowest temperature and TREF. Step two is multiplying Grad 1 by
temperature difference between TREF and OAT. Add results from step one and two to
maximum takeoff weight calculated for lowest temperature.
Note: Use the weight gradients only to extrapolate above the maximum weight shown in the
RTOW chart. They are not valid for interpolation between two boxes, between filled
boxes or between one filled and one blank box.
Repeat the above process for the other available configuration and retain the configuration giving
the highest takeoff weight.
CORRECTIONS DUE TO DIFFERENT TAKEOFF CONDITIONS
Applicable to: ALL
Retain the maximum takeoff weight, associated configuration and speeds from above.
For conditions different from those of the chart, apply relevant corrections.
CONSERVATIVE CORRECTIONS FOR QNH AND BLEEDS
Applicable to:
Refer to PER-TOF-TOD-24 EFFECT OF QNH AND BLEEDS
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF CHARTS - MTOW CALCULATION (WEIGHT ENTRY)
A318/A319/A320/A321 FLEET PER-TOF-TOC-18-10 P 3/26
FCOM 19 AUG 10
Corrections qdfhudmenqPMG≠0/02gO+hqbnmchshnmhmfNM+mshhbdNM
1. For the given wind and temperature conditions, determine the maximum takeoff weight (choose
the configuration giving the highest weight).
2. Apply the published weight correction(s) to the maximum takeoff weight (for each correction) to
determine the maximum permissible takeoff weight.
3. Read the speeds associated with the maximum permissible takeoff weight by entering the chart
with the retained configuration and weight value.
EXAMPLE A
DATA : OAT = 25 °C
Head Wind = 10 kt
Air conditioning ON
QNH = 1 013 hPa
Use the chart (Refer to PER-TOF-TOD-24 EFFECT OF QNH AND BLEEDS).
Enter the 10 kt head wind column CONF 1+F, to read for 25 °C.
The lowest temperature of the column is 38 °C, use Grad 1/Grad 2 to extrapolate the maximum
takeoff weight.
Max TO weight (1 000 kg) air conditioning OFF = 76.2 + 0.4 × 2 + 0.04 × 11 = 77.4
Enter the 10 kt head wind column CONF 2, to read for 25 °C.
The lowest temperature of the column is 37 °C, use Grad 1/Grad 2 to extrapolate the maximum
takeoff weight.
Max TO weight (1 000 kg) air conditioning OFF = 76.0 + 0.41 × 1 + 0.03 × 11 = 76.7
Retain CONF 1+F as takeoff configuration.
Maximum TO weight (1 000 kg) air conditioning OFF................................................................ 77.4
Air conditioning correction............................................................................................................ -2.0
(Refer to PER-TOF-TOD-24 EFFECT OF QNH AND BLEEDS)
Maximum permissible TO weight (1 000 kg) air conditioning ON............................................... 75.4
Determine takeoff speeds for 75.4 (1 000 kg) in the 10 kt head wind column (CONF 1+F)
V1 = 154 kt, VR = 157 kt, V2 = 160 kt
CONSERVATIVE CORRECTIONS FOR QNH AND BLEEDS
Applicable to: MSN,
Refer to PER-TOF-TOD-24 EFFECT OF QNH AND BLEEDS
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF CHARTS - MTOW CALCULATION (WEIGHT ENTRY)
A318/A319/A320/A321 FLEET PER-TOF-TOC-18-10 P 4/26
FCOM 19 AUG 10
Corrections are given for QNH ≠0/02gO+hqbnmchshnmhmfNM+mshhbdNM
1. For the given wind and temperature conditions, determine the maximum takeoff weight (choose
the configuration giving the highest weight).
2. Apply the published weight correction(s) to the maximum takeoff weight (for each correction) to
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A320机组操作手册FLIGHT CREW OPERATING MANUAL 7(55)
