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this effect should be rounded–up to 5 % to provide a provision for weather avoidance.
• if the APU is needed as a power source (MEL), its fuel consumption must be considered: 130 kg/h
or 286 lb/h (APU GEN ON, APU BLEED OFF).
In view of our experience, Airbus Industrie recommends that the operator considers the following non
mandatory fuel practices :
• Include the effect of a demonstrated performance factor, in all standard and ETOPS fuel
requirement computations,
• Include a contingency fuel provision from departure to the Critical Point (CP), when computing the
ETOPS critical fuel planning.
A330/A340 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SPECIAL OPERATIONS
EXTENDED RANGE OPERATIONS - DISPATCH CONSIDERATION
A330/A340 FLEET PRO-SPO-40A-30 P 4/6
FCOM 19 AUG 10
The complete ETOPS critical fuel planning for the ETOPS critical fuel scenario (from the departure to
the Critical Point and then from the Critical Point to the diversion airport) must be compared with the
standard fuel planning (for example, from the departure to the destination and alternate) computed in
accordance with the company fuel policy and applicable operational requirements. The higher of the
two fuel requirements must be considered as the minimum required block fuel for the flight.
DISPATCH FUEL REQUIREMENT FROM CRITICAL POINT TO LANDING
Applicable to: ,
ETOPS diversion fuel requirements for dispatch are provided at the end of this section. Data for the
engine failure case alone is not provided as this scenario is never critical.
WEATHER MINIMA
Applicable to: ,
Weather forecasts for en route alternates must meet the operator’s applicable weather minimun
requirements. If this applicable requirement is AC 120-42A or IL N° 20 following applies :
An airplane cannot be dispatched unless the meteorological forecasts at en route alternate airports
meet the weather minimums listed here for a period starting one hour before the earliest expected
time of landing and ending one hour after the latest expected time of landing.
A. AC 120-42A dispatch weather minima (FAA)
AIRPORT EQUIPMENT Ceiling (ft) Visibility (m)
1 ILS/MLS DH + 400 Greater of (3 200,
published minima + 1 600)
2 ILS/MLS on separate runways * DH + 200 Greater of (1 600,
published minima + 800)
Non precision approach Greater of (800, MDH + 400) Greater of (3 200,
published minima + 1 600)
CAT II/CAT III capability
with engine failure
Lower than above minima, approved on a case-by-case basis
considering aircraft performance under failure conditions
* separate runways are runways which do not touch each other.
DH : decision height
MDH : minimum descent height
B. IL N° 20 dispatch weather minima (JAA)
The operator must use either table 1 or table 2, but not a combination of both.
A330/A340 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SPECIAL OPERATIONS
EXTENDED RANGE OPERATIONS - DISPATCH CONSIDERATION
A330/A340 FLEET PRO-SPO-40A-30 P 5/6
FCOM 19 AUG 10
Approach Facility
Configuration
Alternate Airfield
Ceiling
Weather Minima
Visibility
For aerodromes with at least one
operational navigation facility,
providing a precision or non-precision
runway approach procedure or
a circling manoeuvre from an
instrument approach procedure
A ceiling derived by adding 400 ft to
the authorised DH, MDH (DA/MDA)
or circling minima
A visibility derived by adding 1 500 m
to the authorised landing minima
The weather minima below apply at airports which are equipped with precision or non-precision approaches on at
least two separate runways (two separate landing surfaces)
For airports with at least two
operational navigation facilities
providing a precision or non-precision
runway approach procedure to
separate suitable runways
A ceiling derived by adding 200 ft
to the higher of the two authorised
DH/MDH (DA/MDA) for the
approaches
A visibility derived by adding 800 m
to the higher of the two authorised
landing minima
Table 1
Planning Minima (RVR visibility
required and ceiling if applicable)
Aerodrome with
at least
2 separate
approach
procedures
based on
2 separate
aids serving
2 separate
runways
at least
2 separate
approach
procedures
based on 2
separate aids
serving 1
runway
or
at least
1 approach
procedure
based on 1
aid serving 1
runway
Precision Approach
Cat II, III (ILS, MLS)
Precision
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A330/A340机组操作手册 FLIGHT CREW OPERATING MANUAL FCOM 11(45)
