Anglais ⇄ Anglais Grec Polonais Russe +

downstream data authority contraintes
aviat.	полномочный орган, обеспечивающий обмен данными в направлении полёта
Anglais glossaire
downstream data authority
aviat.	A designated ground system, different from the current data authority through which the pilot can contact an appropriate ATC unit for the purposes of receiving a downstream clearance.