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2.00%
4.00%
6.00%
-2.00% -1.00% 0.00% 1.00% 2.00% 3.00% 4.00% 5.00% 6.00%
Fuel %
Time %
M No
FMGS
0.76
0.8
100 kg
1 minute
0
100
Getting to grips with Fuel Economy 8 - APPENDIXES
- 79 -
The A330 aircraft show characteristics similar to the A321 and an example
is shown below.
The A340-200/300 series show characteristics approaching that of the
A340-500/600 but still shows minimum fuel at a speed lower than max, unlike the
A340-500/600 (see 5.2.3).
Effect of Climb Technique on fuel and time to 220nm
A340-313E ISA F/L 350 Weight 240000kg
-6.00%
-4.00%
-2.00%
0.00%
2.00%
4.00%
6.00%
-1.00% 0.00% 1.00% 2.00% 3.00%
Fuel %
Time %
M No
FMGS
0.76
0.78
0.8
280
300
320
340
Climb Speed kias
0.82
270
100kg
1 minute
Effect of Climb Technique on fuel and time to 150nm
A330-343 ISA F/L 350 Weight 190000kg
-6.00%
-4.00%
-2.00%
0.00%
2.00%
4.00%
6.00%
-1.00% 0.00% 1.00% 2.00% 3.00%
Fuel %
Time %
M No
FMGS
0.8 0.76
280
300
320
340
Climb Speed kias
0.82
270
100 kg
1 minute
0
100
8 - APPENDICES Getting to grips with Fuel Economy
- 80 -
APPENDIX B (DESCENT CHARTS)
The A300 shows similar characteristics to the A310 in the main report.
The A320 shown below has similar characteristics to the A318, A319 and
A321.
Effect of Descent Technique on Fuel and Time for 115nm
A300B4-605R ISA Weight 120000kg
17.5
18.0
18.5
19.0
19.5
20.0
20.5
21.0
21.5
22.0
250 300 350 400 450 500 550 600
Fuel - kg
Time - min
240
250
260
300
320
330
6
28
50
72
100
390 370 350 330 310
Initial Flight Level
Cost
Index
Descent
Speed KIAS
Effect of Descent Technique on Fuel and Time for 120nm
A320-214 ISA Weight 60000kg
16.0
17.0
18.0
19.0
20.0
21.0
22.0
23.0
200 250 300 350 400 450
Fuel - kg
Time - min
240
250
260
300 320
340
0
24
36
50
80
390 370 350 330 310
Initial Flight
Cost
Index
Descent
Speed KIAS
280
9
Getting to grips with Fuel Economy 8 - APPENDIXES
- 81 -
The following shows an example of an A330:
Most of the A340’s have similar speed characteristics to the A340-642
shown below. The A340-200 does however show an improvement in fuel for
speeds lower than 260kts.
Effect of Descent Technique on Fuel and Time for 160nm
A330-343 ISA Weight 180000kg
24.0
25.0
26.0
27.0
28.0
29.0
30.0
500 600 700 800 900 1000 1100
Fuel - kg
Time - min
240
250
260
300
320
340
48
310
390 370 I3n5i0tial Flight Le3v3e0l
Cost
Index
Descent
Speed
KIAS
280
30
CI=0 270kias
CI=60 315kias
CI=100 315kias
Effect of Descent Technique on Fuel and Time for 160nm
A340-642 ISA Weight 270000kg
24.0
25.0
26.0
27.0
28.0
29.0
30.0
700 800 900 1000 1100 1200 1300 1400 1500 1600
Fuel - kg
Time - min
240
250
260
300
320
340
78
310
370 350 330
390
Initial Flight Level
Cost
Index
Descent Speed
KIAS
280
21
CI=0 272kias
CI=100 308kias
AIRWORTHINESS DIRECTIVE
No F-2001-499 R4
Distribution:
B
Issue date:
August 31, 2005
Page :
1/2
This Airworthiness Directive is published by the DGAC on behalf of
EASA, Airworthiness Authority of the State of Design for the affected
product, part or appliance.
Translation of « Consigne de Navigabilité » of same
number.
In case of difficulty, reference should be made to
the French issue.
Direction
générale
de
l’aviation
civile
France
GSAC
publication
No person may operate an aircraft to which an Airworthiness Directive applies,
except in accordance with the requirements of that Airworthiness Directive,
unless otherwise agreed with the Authority of the State of Registry.
Corresponding foreign Airworthiness Directive(s):
Not applicable
　
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