曝光台 注意防骗
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are those intended to be conducted over a route that contains a point more than 60 min from an
adequate airport at the selected one-engine-inoperative speed in still air and ISA (or prevailing delta
ISA) conditions.
An adequate airport is an airport which satisfies the aircraft performance requirements applicable
at the expected landing weight, and sufficiently equipped to be safely used. In particular, at the
anticipated time of use, it should be available and equipped with the necessary services, including
ATC, weather information and at least one let down aid for an instrument approach.
A suitable airport is a confirmed adequate airport which satisfies the dispatch weather minima
requirements for ceiling and visibility within the required validity period. Airport conditions should also
ensure that a safe landing with one engine and/or airframe system inoperative is possible.
AREA OF OPERATION
Applicable to: ALL
The maximum distance from an adequate airport must be determined for ISA (or prevailing delta ISA)
and no-wind conditions, taking into account aircraft performance with one engine inoperative and the
remaining engine operating at not more than MCT.
To determine the maximum distance from an adequate airport, the operator must define a diversion
speed strategy as well as an aircraft reference weight for performance computation.
The same diversion speed strategy (Refer to PER-CRZ-OEI-GEN-05 INTRODUCTION) must be
considered for :
establishing ‐ the area of operation,
‐ calculating the single-engine fuel planning,
‐ conducting the diversion in case of engine failure (conditions permitting).
The operator establishes the ETOPS reference gross weight for each route or area of operation. This
must be a representative but conservative value of the aircraft gross weight at the critical point of the
route or at the various critical points of all the routes included in the area of operation.
The-one-engine-inoperative descent and cruise speed law must be chosen so that the associated net
flight path clears the enroute obstacles with the regulatory margin.
Data for three speed schedules : Refer to PER-CRZ-OEI-GEN-05 INTRODUCTION. The associated
approved net flight paths are published in the section 6 of the Flight Manual.
When the diversion strategy is chosen, the maximum distance from a diversion airport, can be
directly determined for different maximum diversion times, with the help of the tables provided in this
section. The area of possible ETOPS operation can then be drawn on plotting charts.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SPECIAL OPERATIONS
EXTENDED RANGE OPERATIONS - OPERATIONAL LIMITATIONS
A318/A319/A320/A321 FLEET PRO-SPO-40-20 P 2/2
FCOM 19 AUG 10
Another way to determine the maximum distance to a diversion airport is to read the
one-engine-inoperative cruise TAS (for the reference gross weight and at the FL for best TAS) in
the cruise tables (Refer to PER-CRZ-OEI-GEN-05 INTRODUCTION) taking into consideration the
appropriate speed strategy and the minimum altitude for clearing possible obstacles. The maximum
distance the aircraft can travel to a diversion airport is this one-engine-inoperative-TAS multiplied by
the maximum allowed diversion time granted to the operator.
Operators whose authorities require that an approved one-engine-inoperative speed be published in
the Flight Manual must use this approved speed.
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 1/4
FCOM 19 AUG 10
MMEL
Applicable to: ALL
The MMEL has been approved taking into consideration the duration of the average ETOPS flight
and the maximum diversion time granted to the airframe/engine combination.
The MMEL published by Airbus Industrie and approved by the French DGAC can be used to
establish the airline MEL, which must be approved by the operator's national authorities.
This MEL will probably be adapted to the airline network, environment and organization.
Other determining parameters will be :
• The maximum and the average diversion times on the route.
• The equipment of the enroute alternates.
• The navigation and communication facilities.
• The average meteorological conditions.
COMMUNICATION AND NAVIGATION FACILITIES
Applicable to: ALL
The aircraft communication system has provision to install three VHF transceivers and two HF radios
ensuring full compliance with ETOPS requirements on any kind of route.
The aircraft navigation system meets the ETOPS requirements for en route navigation.
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A320机组操作手册FLIGHT CREW OPERATING MANUAL 14(28)
