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During the diversion, the flight crew is expected to use the planned speed schedule.
However, based on the evaluation of the actual situation, the pilot in command has the authority to
deviate from this planned one engine inoperative speed.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
CRUISE
ONE ENGINE INOPERATIVE - GENERAL
A318/A319/A320/A321 FLEET PER-CRZ-OEI-GEN-10 P 1/8
FCOM 19 AUG 10
STANDARD STRATEGY
PROCEDURE
Applicable to: ALL
Unless a specific procedure has been established before dispatch (ETOPS, mountainous areas) the
recommended procedure is as follows :
EXAMPLE
Applicable to: ,
, MSN
GIVEN
GW at engine failure = 80 000 kg
FL at engine failure = 310
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
CRUISE
ONE ENGINE INOPERATIVE - GENERAL
A318/A319/A320/A321 FLEET PER-CRZ-OEI-GEN-10 P 2/8
FCOM 19 AUG 10
Temperature = ISA
Distance to diversion airport = 540 nm
No wind
FIND
LRC ceiling : FL 180
(Refer to PER-CRZ-OEI-ALT-10 GROSS CEILINGS AT LONG RANGE AND GREEN DOT
SPEEDS)
Descent to cruise level : (FL 180)
(Refer to PER-DES-OEI-STD DESCENT - M.78/300KT - 1 ENGINE OUT)
Distance = 230 - 98 = 132 nm
Fuel = 1 399 - 648 = 751 kg
Time = 34.9 - 16.0 = 18.9 min
Cruise at long range speed (FL 180) to landing
(Weight = 80 000 - 751 = 79 249 kg : Distance = 540 - 132 = 408 nm)
Determine on (Refer to PER-CRZ-OEI-ICQ-10 IN CRUISE QUICK CHECK LONG RANGE) time
and fuel consumption at ISA conditions and for a reference weight of 60 000 kg. Interpolate the
remaining air distance of 408 nm at FL 180.
Fuel : 2 586 kg
Time : 1 h 23 min
Correction due to actual in-cruise weight
◂Fuel = +25 kg per 1 000 kg above reference weight
◂Fuel = +25 kg × (79.2 – 60) = 480 kg
RESULT
Total Fuel = 751 + 2 586 + 480 = 3 817 kg
Time = 1 h 23 min + 19 min = 1 h 42 min
EXAMPLE
Applicable to:
GIVEN
GW at engine failure = 70 000 kg
FL at engine failure = 310
Temperature = ISA
Distance to diversion airport = 540 nm
No wind
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
CRUISE
ONE ENGINE INOPERATIVE - GENERAL
A318/A319/A320/A321 FLEET PER-CRZ-OEI-GEN-10 P 3/8
FCOM 19 AUG 10
FIND
LRC ceiling : FL 220
(Refer to PER-CRZ-OEI-ALT-10 GROSS CEILINGS AT LONG RANGE AND GREEN DOT
SPEEDS)
Descent to cruise level : (FL 220)
(Refer to PER-DES-OEI-STD DESCENT - M.78/300KT - 1 ENGINE OUT)
Distance = 231-151 = 80 nm
Fuel = 1 274 - 896 = 378 kg
Time = 35 - 24 = 11 min
Cruise at long range speed (FL 220) to landing
(Weight = 70 000 - 378 = 69 622 kg : Distance = 540 - 80 = 460 nm)
Determine on (Refer to PER-CRZ-OEI-ICQ-10 IN CRUISE QUICK CHECK LONG RANGE) time
and fuel consumption at ISA conditions and for a reference weight of 55 000 kg. Interpolate the
remaining air distance of 460 nm at FL 220.
Fuel : 2 482 kg
Time : 1 h 29 min
Correction due to actual in-cruise weight
◂Fuel = +25 kg per 1 000 kg above reference weight
◂Fuel = +25 kg × (69.7 – 55) ~ 368 kg
RESULT
Total Fuel = 378 + 2 482 + 368 = 3 228 kg
Time = 1 h 29 min + 11 min = 1 h 40 min
EXAMPLE
Applicable to:
GIVEN
GW at engine failure = 70 000 kg
FL at engine failure = 310
Temperature = ISA
Distance to diversion airport = 540 nm
No wind
FIND
LRC ceiling : FL 179
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
CRUISE
ONE ENGINE INOPERATIVE - GENERAL
A318/A319/A320/A321 FLEET PER-CRZ-OEI-GEN-10 P 4/8
FCOM 19 AUG 10
(Refer to PER-CRZ-OEI-ALT-10 GROSS CEILINGS AT LONG RANGE AND GREEN DOT
SPEEDS)
Descent to cruise level : (FL 170)
(Refer to PER-DES-OEI-STD DESCENT - M.78/300KT - 1 ENGINE OUT)
Distance = 234 - 85 = 149 nm
Fuel = 1 264 - 506 = 758 kg
Time = 35.4 - 14.0 = 21.4 min
Cruise at long range speed (FL 170) to landing
(Weight = 70 000 - 758 = 69 242 kg : Distance = 540 - 149 = 391 nm)
Determine on (Refer to PER-CRZ-OEI-ICQ-10 IN CRUISE QUICK CHECK LONG RANGE) time
and fuel consumption at ISA conditions and for a reference weight of 55 000 kg. Interpolate the
remaining air distance of 391 nm at FL 170.
Fuel : 2 283 kg
Time : 1 h 20 min
Correction due to actual in-cruise weight
◂Fuel = +20 kg per 1 000 kg above reference weight
◂Fuel = +20 kg × (69.2 – 55) = 284 kg
RESULT
Total Fuel = 758 + 2 283 + 284 = 3 325 kg
Time = 1 h 20 min + 22 min = 1 h 42 min
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A320机组操作手册FLIGHT CREW OPERATING MANUAL 6(6)
