abbreviated precision approach path indicator (apapi)

precision approach path indicator (papi)

abbreviated visual approach slope indicator system (avasis)

abbreviated visual approach

glide path transmitter / glide-path transmitter

approach path

abbreviated preparation of initial data

abbreviated form

abbreviated

abbreviated training

abbreviated uniform

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)

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