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5. Trip fuel and time
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
FLIGHT PLANNING
FLIGHT PREPARATION - QUICK DETERMINATION OF FLIGHT PLANNING
A318/A319/A320/A321 FLEET PER-FPL-FLP-QFP-30 P 2/10
FCOM 19 AUG 10
‐ Enter air distance and flight level 370 (Refer to PER-FPL-FLP-QFP-40 FLIGHT PLANNING
M.78), read the corresponding values of fuel consumption and time, for the reference landing
weight and without deviation from ISA.
Fuel : 10 478 kg
Time : 4 h 37 min
‐ Correction for landing weight
Δ􀀃etdk
consumption
: 146 × (62.914 – 55) = 1 155 kg
Trip reserves
(5 %)
: 0.05 × (10 478 + 1 155) = 582 kg
6. Taxi fuel = 140 kg (Refer to PER-FPL-GEN-MFR MINIMUM RECOMMENDED FUEL
REQUIREMENTS)
7. Total fuel on board (Block fuel) :
10 478 + 1 155 + 582 + 1 300 + 1 614 + 140 = 15 269 kg
EXAMPLE
Applicable to: MSN,
The following is an example of a complete flight plan based on the assumptions :
‐ Zero fuel weight : 60 000 kg = landing weight at alternate airport
‐ Cruise M .78 at FL 370
‐ Ground distance from departure to destination : 1 800 nm
‐ Average wind during flight : -40 kt (headwind)
‐ ISA conditions
‐ “En route” reserve : 5 %
‐ Ground distance from destination to alternate : 200 nm, no wind at FL 200
To calculate the flight plan, a reverse calculation is needed, i.e. start with the landing weight at
alternate (the schematic Refer to PER-FPL-GEN-FPL FLIGHT PLAN gives an overview of the
calculation to be performed).
1. Alternate fuel and time
‐ Refer to PER-FPL-FLP-ALN-20 ALTERNATE PLANNING ISA ;
Alternate time : 38 min
Alternate fuel : 1 573 + 9 × (60 – 55) = 1 618 kg
2. Holding fuel and time
‐ A 30 min holding is assumed at 1 500 ft. ( Refer to PER-HOL-AEO CONF 0 - GD SPEED),
holding fuel = 1 090 kg
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
FLIGHT PLANNING
FLIGHT PREPARATION - QUICK DETERMINATION OF FLIGHT PLANNING
A318/A319/A320/A321 FLEET PER-FPL-FLP-QFP-30 P 3/10
FCOM 19 AUG 10
3. At destination, the landing weight = 60 000 + 1 618 + 1 090 = 62 708 kg
4. Evaluation of the air distance between departure and destination.
The “Ground distance/A ‐ ir distance” conversion table (Refer to PER-OPD-CON-AEO M.78)
shows that the corresponding air distance is : 1 975 nm.
5. Trip fuel and time
‐ Enter air distance and flight level 370 (Refer to PER-FPL-FLP-QFP-40 FLIGHT PLANNING
M.78), read the corresponding values of fuel consumption and time, for the reference landing
weight and without deviation from ISA.
Fuel : 10 205 kg
Time : 4 h 37 min
‐ Correction for landing weight
Δ􀀃etdk
consumption
: 146 × (62.7 – 55) = 1 124 kg
Trip reserves
(5 %)
: 0.05 × (10 205 + 1 124) = 567 kg
6. Taxi fuel = 140 kg (Refer to PER-FPL-GEN-MFR MINIMUM RECOMMENDED FUEL
REQUIREMENTS)
7. Total fuel on board (Block fuel) :
10 205 + 1 124 + 567 + 1 090 + 1 618 + 140 = 14 744 kg
EXAMPLE
Applicable to:
The following is an example of a complete flight plan based on the assumptions :
‐ Zero fuel weight : 55 000 kg = landing weight at alternate airport
‐ Cruise M .78 at FL 370
‐ Ground distance from departure to destination : 1 800 nm
‐ Average wind during flight : -40 kt (headwind)
‐ ISA conditions
‐ “En route” reserve : 5 %
‐ Ground distance from destination to alternate : 200 nm, no wind at FL 200
To calculate the flight plan, a reverse calculation is needed, i.e. start with the landing weight at
alternate (the schematic Refer to PER-FPL-GEN-FPL FLIGHT PLAN gives an overview of the
calculation to be performed).
1. Alternate fuel and time
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
FLIGHT PLANNING
FLIGHT PREPARATION - QUICK DETERMINATION OF FLIGHT PLANNING
A318/A319/A320/A321 FLEET PER-FPL-FLP-QFP-30 P 4/10
FCOM 19 AUG 10
‐ Refer to PER-FPL-FLP-ALN-20 ALTERNATE PLANNING ISA ;
Alternate time : 40 min
Alternate fuel : 1 459 + 10 × (60 – 55) = 1 509 kg
2. Holding fuel and time
A 30 min holding ‐ is assumed at 1 500 ft. (Refer to PER-HOL-AEO CONF 0 - GD SPEED),
holding fuel = 1 243 kg
3. At destination, the landing weight = 60 000 + 1 509 + = 62 752 kg
4. Evaluation of the air distance between departure and destination.
‐ The “Ground distance/Air distance” conversion table (Refer to PER-OPD-CON-AEO M.78)
shows that the corresponding air distance is : 1 688 nm.
　
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