precision approach path indicator (papi)

abbreviated precision approach path indicator (apapi)

glide path transmitter / glide-path transmitter

approach path

precision approach and landing system (PALS)

precision approach radar (PAR)

non-precision approach

non-precision approach runway

precision approach runway

precision approach

precision approach radar

instantaneous vertical speed indicator / instantaneous vertical-speed indicator (IVSI)

abbreviated visual approach slope indicator system (avasis)

visual approach slope indicator system (vasis)

cleared path

flight path

initial path sweeping

intercept flight path

instantaneous radius of the flight path

path-clearing party

Karman vortex path

two-frequency glide path system

path of a fluid element

rescue path

flight path angle

flight path direction

flight path error

flight path monitoring system

flight path noise measurement point

glide path (GP)

glide path angular error

glide path height

glide-path transmitter