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CRITICAL POINT
TO LANDING ONE
ENGINE-OUT
CRUISE AT
310KTMCT/330 kt
DESCENT
TO LANDING IDLE/M .82/300 kt/250 kt
Approx. increase in
fuel consumption
compared with both
engines operative
+ 30 %
For ETOPS operations, any of the above diversion strategies can be used provided that the selected
strategy and speed schedule is used in :
establishing the area of operation (maximum diversion distance), ‐ as described in Section 2.04.40
(Refer to PRO-SPO-40A-20 AREA OF OPERATION)
‐ calculating the diversion fuel requirements for the single engine ETOPS critical scenario, as
provided in section 2.04.40 (Refer to PRO-SPO-40A-30 ETOPS CRITICAL FUEL RESERVES),
‐ demonstrating the applicable obstacle clearance requirements (net flight path and net ceiling).
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.
A330/A340 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
CRUISE
ONE ENGINE INOPERATIVE - GENERAL
Intentionally left blank
A330/A340 FLEET PER-CRZ-OEI-GEN-05 P 4/4
FCOM 19 AUG 10
A330/A340 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
CRUISE
ONE ENGINE INOPERATIVE - GENERAL
A330/A340 FLEET PER-CRZ-OEI-GEN-10 P 1/2
FCOM 19 AUG 10
STANDARD STRATEGY
PROCEDURE
Applicable to:
Unless a specific procedure has been established before dispatch (obstacles, mountainous areas)
the recommended procedure is as follows :
PROCEDURE
Applicable to: ,
Unless a specific procedure has been established before dispatch (obstacles, mountainous areas)
the recommended procedure is as follows :
A330/A340 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
CRUISE
ONE ENGINE INOPERATIVE - GENERAL
A330/A340 FLEET PER-CRZ-OEI-GEN-10 P 2/2
FCOM 19 AUG 10
A330/A340 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
CRUISE
ONE ENGINE INOPERATIVE - GENERAL
A330/A340 FLEET PER-CRZ-OEI-GEN-15 P 1/2
FCOM 19 AUG 10
OBSTACLE STRATEGY
PROCEDURE
Applicable to: ALL
In order to maintain the highest possible level, the drift down procedure must be adopted. This
requires maximum continuous thrust on the remaining engines at green dot speed.
�� If, having reached green dot ceiling altitude, an obstacle problem remains,
the drift down procedure must be maintained so as to fly an ascending cruise profile.
�� If, after drift down, no obstacle problem remains,
the speed should be allowed to increase to long range speed and maintained. The subsequent
cruise should be made using either the long range speed by adjusting it as a function of aircraft
weight or by maintaining the initial cruise speed.
Note: Due to the fact that the long range speed is higher than the green dot speed, the cruise will
be made at an altitude lower than the drift down ceiling.
A330/A340 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
CRUISE
ONE ENGINE INOPERATIVE - GENERAL
Intentionally left blank
A330/A340 FLEET PER-CRZ-OEI-GEN-15 P 2/2
FCOM 19 AUG 10
A330/A340 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
CRUISE
ONE ENGINE INOPERATIVE - GENERAL
A330/A340 FLEET PER-CRZ-OEI-GEN-20 P 1/2
FCOM 19 AUG 10
ALTERNATE
PROCEDURE
Applicable to: ,
This section provides single engine performance data for two fixed speed diversion strategies
(fixed descent and cruise speed schedules) recommended for ETOPS operation, provided that the
requirements set forth, Refer to PER-CRZ-OEI-GEN-05 INTRODUCTION, are complied with.
EXAMPLE
Applicable to: ,
GIVEN :
GW at engine failure = 175 000 kg
FL at engine failure = 370
Temperature = ISA
Distance to diversion airport = 500 nm
A330/A340 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
CRUISE
ONE ENGINE INOPERATIVE - GENERAL
A330/A340 FLEET PER-CRZ-OEI-GEN-20 P 2/2
FCOM 19 AUG 10
Speed selected before dispatch = 330 kt
Cruise level for diversion = FL 180
selected before dispatch
FIND :
Descent to cruise level :
(Refer to PER-TEI-DES-OEI-FSS DESCENT - M.82/330KT - 1 ENGINE OUT)
Distance = 294 - 107 = 187 nm
Fuel = 3 796 - 1 564 = 2 232 kg
Time = 40.4 - 16 = 24.4 min
Cruise
Weight = 175 000 - 2 232 = 172 768 kg
Distance = 500 - 187 = 313 nm
Determine (Refer to PER-CRZ-OEI-ICQ-20 IN CRUISE QUICK CHECK 330 KT) time and fuel
consumption at ISA conditions for a reference weight of 170 000 kg
Interpolate the remaining distance of 313 nm at FL 180.
　
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