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2.2. AERODROME DEFINITIONS2.2.1. Destination AerodromesIntended destinationThe intended destination is normally the scheduled destination. If the flight is planned to,
and a landing is intended at an aerodrome other than the scheduled destination,
coordination with appropriate functions concerned and station manager is recommended.
Secondary destinationA selected aerodrome, which routed via the same Point of Replanning as the intended
destination, to be planned as destination for the flight in order to accommodate more
payload than a direct planning to the intended destination, or for fuel economy.
2.2.2. Alternate AerodromesDestination alternateAn aerodrome to which a flight may proceed if the destination becomes unavailable. Such
aerodrome(s) shall be specified on the Company flight plan and ATS flight plan.
En route alternateAn en route alternate used for planning with reduced Contingency Fuel (CF) is an
aerodrome which should be located within a circle with a radius equal to 20% of the total
flight plan distance, the center of which lies on the planned route at a distance from
destination 25% of the total flight plan distance, or 20% of the total flight plan distance plus
50 nm, whichever is greater.
Whenever possible, aerodromes close to the intended track should be selected.
The weather at the en route alternate shall be forecast and expected to be at or above
alternate minima.
The en route alternate shall be specified in the Company flight plan.
Intermediate Alternate Aerodrome (Emergency Aerodrome)
An aerodrome which offers a possible landing in case of en route irregularity that requires
no-delay landing.
Secondary alternateThe alternate used for a secondary destination.
Takeoff alternateAn aerodrome to which a flight can proceed with one engine out whenever the aerodrome
of departure is not available for a possible return due to meteorological or performance
reasons.
Requirement for takeoff alternate, see RM/PFL.
Weather requirement for the selected takeoff alternate is the same as that for destination.
2.2.3. Isolated AerodromeAn isolated destination with no existing adequate destination alternate.
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