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The aircraft has three inertial reference systems which, in conjunction with 2 FMS comply with MNPS
criteria and this combination of systems is approved as the sole means of navigation for flight up to
the maximum aircraft range.
See the MEL for a definition of the authorized dispatch configuration.
Note: For operation within the MNPS area, airlines must obtain approval from their national
authorities.
FUEL AND OIL SUPPLY
Applicable to: ALL
The aircraft fuel and oil supply must be adequate to allow the aircraft to reach its destination or
a planned alternate after the combined failures of an engine and pressurization or the failure of
pressurization alone at the critical point on the route. Planners must consider forecast wind and
temperature conditions, as well as forecast icing conditions.
The operator must establish a routine for ETOPS critical fuel planning and compare it with the
standard (non-ETOPS) fuel planning.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SPECIAL OPERATIONS
EXTENDED RANGE OPERATIONS - DISPATCH CONSIDERATION
A318/A319/A320/A321 FLEET PRO-SPO-40-30 P 2/4
FCOM 19 AUG 10
ELECTRICAL GENERATORS
Applicable to: ALL
Three generators are required for dispatch.
ETOPS FUEL SCENARIOS
Applicable to: ALL
For establishing the ETOPS critical fuel reserves, the planner must consider two diversion scenarios.
PRESSURIZATION FAILURE + ENGINE FAILURE
PRESSURIZATION FAILURE
Same flight profile, but with 2 engines operating and diversion cruise set at LRC.
FUEL REQUIREMENTS
For each scenario, the required block fuel must be computed in accordance with the operator's
ETOPS fuel policy and using the regulatory ETOPS critical fuel reserves described below.
Depending on the strategy and the one-engine-inoperative speed selected for the single-engine
diversion scenario, either of these two scenarios may result in the higher fuel requirement.
The scenario resulting in the higher fuel requirement is the ETOPS critical fuel scenario, and the
associated minimum block fuel requirement is the ETOPS critical fuel plan.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SPECIAL OPERATIONS
EXTENDED RANGE OPERATIONS - DISPATCH CONSIDERATION
A318/A319/A320/A321 FLEET PRO-SPO-40-30 P 3/4
FCOM 19 AUG 10
DISPATCH FUEL REQUIREMENT FROM CRITICAL POINT TO LANDING
Applicable to: ALL
ETOPS diversion fuel requirements for dispatch are provided at the end of this section. Data for the
engine failure case alone are not provided as this scenario is never critical.
WEATHER MINIMA
Applicable to: ALL
Weather forecasts for en route alternates must meet the operator's applicable weather minimum
requirements. If the applicable requirement is AC 120-42A or IL 20 the 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 (1)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
(1) separate runways are runways that do not touch each other.
DH: decision height
MDH: minimum descent height
B. IL 20 DISPATCH WEATHER MINIMA (JAA)
The operator must use either table 1 or table 2, but not a combination of both.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SPECIAL OPERATIONS
EXTENDED RANGE OPERATIONS - DISPATCH CONSIDERATION
A318/A319/A320/A321 FLEET PRO-SPO-40-30 P 4/4
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
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A320机组操作手册FLIGHT CREW OPERATING MANUAL 14(29)
