41. Take-off alternate aerodrome

An AOC holder must select, and specify in the operational flight plan, filed flight plan and preliminary flight plan (if applicable), a take‑off alternate aerodrome for every flight of a large aeroplane where —

the meteorological conditions at the aerodrome of departure are below the AOC holder’s established aerodrome landing minima for that operation; or

it would not be possible for the aeroplane to return to the aerodrome of departure for any other reason.

Except in accordance with an approval granted under the Air Navigation (98 — Special Operations) Regulations 2018 for EDTO operations, an AOC holder must ensure that the take‑off alternate aerodrome selected in accordance with paragraph (1) is located —

within one hour flight time of the aerodrome of departure at a one‑engine inoperative cruise speed, if the large aeroplane has 2 engines; or

within 2 hours of flight time of the aerodrome of departure at an all‑engine operating cruising speed, if the large aeroplane has 3 or more engines.

For the purpose of paragraph (2), flight time is calculated in International Standard Atmosphere and still air conditions using the relevant cruise speed as determined from the AOC holder’s Operations Manual and the aeroplane’s actual take‑off mass.

An AOC holder must select, and specify in the operational flight plan, filed flight plan and preliminary flight plan (if applicable), a take‑off alternate aerodrome for every flight of a large aeroplane where —

the meteorological conditions at the aerodrome of departure are below the AOC holder’s established aerodrome landing minima for that operation; or

it would not be possible for the aeroplane to return to the aerodrome of departure for any other reason.

Except in accordance with an approval granted under the Air Navigation (98 — Special Operations) Regulations 2018 for EDTO operations, an AOC holder must ensure that the take‑off alternate aerodrome selected in accordance with paragraph (1) is located —

within one hour flight time of the aerodrome of departure at a one‑engine inoperative cruise speed, if the large aeroplane has 2 engines; or

within 2 hours of flight time of the aerodrome of departure at an all‑engine operating cruising speed, if the large aeroplane has 3 or more engines.

For the purpose of paragraph (2), flight time is calculated in International Standard Atmosphere and still air conditions using the relevant cruise speed as determined from the AOC holder’s Operations Manual and the aeroplane’s actual take‑off mass.