trajectory within a standard atmosphere

static ceiling (the highest altitude at which the helicopter is capable of hovering in standard atmosphere) / hover ceiling

International Standard Atmosphere (ISA)

jet standard atmosphere (JSA)

standard atmosphere

atmosphere control equipment

turbulent atmosphere area

adiabatic atmosphere

atmosphere

atmosphere sounding

Special Report on Aviation and the Global Atmosphere

ambient atmosphere

dense atmosphere

disturbed atmosphere

disturbed atmosphere flight

dusty atmosphere

Earth’s atmosphere

free atmosphere

high-density atmosphere

life-sustaining oxigen-nitrogen atmosphere

low-density atmosphere

upper atmosphere

atmosphere-bearing celestial body

within range of enemy influence

within visual range (WVR)

sow discord within

base of operations within a foreign country with which a resident spy may liaise

within cannon shot

within the sight

within gunshot

within gunshot range

Intermediate Maintenance (I-level) (in centrally located facilities within a designated geographical area)

within call