flight (operating) safety
безпека польотів
безпека польотів
variable operating and safety level
safety and arming device / safety-and-arming device
ICAO Flight Safety and Human Factors Programme
potential hazard to flight safety
flight restriction zone / flight restricted zone (FRZ)
battlefield operating system (BOS)
buffer and operating-rod group
common operating environment (COE)
contemporary operational environment / contemporary operating environment (COE)