ali00
19th Aug 2020, 09:24
buongiorno a tutti! avrei una domanda da porre...cosa si intende per "take-off alternate"? grazie in anticipo.
Nick 1
19th Aug 2020, 09:48
SKYbrary is your friend....Take-off alternateA take-off alternate aerodrome should be specified in the operational flight plan if either the meteorological conditions at the departure aerodrome are below the applicable landing minima or in case it should not be possible to return to the departure aerodrome for some other reason. For aeroplanes with two engines, such an alternate must be within one hour's flight time at the one-engine-inoperative cruising speed specified in the Aerodrome Operating Manual (AOM) or equivalent document and assuming the aircraft mass is the actual mass at take off and ISA and still-air conditions prevail. Aeroplanes with three or more engines are permitted two hours of flight time for the same purpose and under the same conditions except the all engines operating cruising speed may me used. An aerodrome may not be designated as an alternate unless the available information indicates that at the estimated time of potential use, the prevailing conditions will be at or above the applicable operating minima.
Ad esempio immagina che tu sia limitato in caso di one-engine-out ad operare in Cat II (100/300 di RVR) , fai un decollo con 125 mt di RVR , piantata motore , non puoi tornare sull’aeroporto di partenza , hai bisogno di un Take Off Alternate.
Puo trovarsi in un raggio uguale alla distanza massima volabile con un motore inoperativo .