.
 Enter in takeoff chart with wind and OAT.

.
 Read that MTOW on a DRY runway is 245 900 kg.

Step 2:
.
 Refer to the FCOM corrections, SPECIAL OPERATIONS chapter.

.
 5 mm of slush, use 6.3 mm (1/4 inch) slush data.

.
 Enter with airport runway length and configuration.

Step 3:
. Interpolate for the runway length, (read from the takeoff chart header that runway length is 3200 M), read the weight penalty: 24 800 kg.

Step 4:
.
Apply the penalty on the MTOW DRY, get the corrected weight.

.
 Corrected weight equals 245 900 kg minus 24 800 kg, i.e. 221 100 kg.

112

Step 5:
.
 Refer to the CONF 2 table.

.
 Read that MTOW SLUSH is equal to the corrected weight.

Step 6:
. Read the associated speeds. (Refer to the next higher weight, i.e. 230 t)

ANSWER METHOD 1:
MTOW SLUSH is 221 100 kg
V1 = 136, VR = 147 and V2 = 151.

Example of method 2: Takeoff chart dry + chart corrections

Step 1:
.
 Refer to the takeoff chart DRY.

.
 Enter in takeoff chart with wind and OAT.

.
 Read that MTOW on a DRY runway is 245 900 kg and associated speeds are 159/62/67

Step 2:
.
 Refer to the chart corrections.

.
 Read 23 200 kg and -16/-12/-12

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ANSWER METHOD 2:
MTOW SLUSH is 245 900 kg - 23 200 kg equals 222 700 kg. V1 = 159 - 16 = 141 kt VR = 162 - 12 = 150 kt V2 = 167 - 12 = 155 kt

Example of method 3: Takeoff chart contaminated

Step 1 AND ANSWER METHOD 3:
.
 Refer to the takeoff chart SLUSH 1/4’’.

.
 Enter in takeoff chart with wind and OAT.

.
Read that MTOW on a SLUSHY runway is 225 000 kg, and speeds are V1 = 142, VR = 152 and V2 = 155

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Example of method 4: Less Paper in the Cockpit
1 - Select Airport and runway. 2 - Select the conditions.

4- Read the MTOW and speeds

For the sake of simplicity the previous example does not cover:
.
Takeoff speed determination,

.
 Flap setting optimization,

.
 Derate level optimization, and

.
 QNH, bleeds, MEL corrections.

The LPC program enables a very easy and quick determination of these parameters. The following example illustrates this:
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INPUT SCREEN

OUTPUT SCREEN

120

Performance determination summary

Precision scale

More conservative More accurate
Difficulty of use

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