Inglés ⇄ Inglés Ruso Ucraniano +

significant obstacle
avia.	суттєва перешкода
Inglés tesauro
significant obstacle
avia.	Any natural terrain feature or man-made fixed object, permanent or temporary, which has vertical significance in relation to adjacent and surrounding features and which is considered a potential hazard to the safe passage of aircraft in the type of operation for which the individual chart series is designed.