accident conditions

aircraft accident (flight accident; aircraft mishap)

aircraft accident / flight accident, aircraft mishap

aircraft mishap / flight accident, aircraft accident

flight accident / aircraft accident, aircraft mishap

aircraft accident; flight accident

ambient conditions

chemical and biological conditions

conditions of reduced visibility

favorable conditions

physiographic conditions

simulated combat conditions

supervise the observation of armistice conditions

tactical conditions

firing conditions

meteorological conditions of fire

under nonnuclear conditions

under nuclear conditions

ditching conditions

ever-changing conditions

mission abort conditions

actual conditions meteorological report

ballistic and atmospheric conditions

bad weather conditions

Cauchy-Riemann conditions

landing conditions

visibility reduced conditions

visual meteorological conditions (VMC)

adverse conditions

atmospheric conditions

environmental conditions

reference conditions

reference environment conditions