abbreviated visual approach slope indicator system (avasis)

visual approach slope indicator system (vasis)

abbreviated visual approach

abbreviated precision approach path indicator (apapi)

visual slope aid

beyond visual range / beyond-visual-range (BVR)

abbreviated preparation of initial data

abbreviated form

abbreviated

abbreviated training

abbreviated uniform

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

visual approach

visual approach chart

precision approach path indicator (papi)

antiaircraft artillery visual cueing system

visual cueing system

visual target acquisition system

computer-generated image visual system

visual airborne target locator system

visual precision fire control system

Degraded Visual Environments Pilotage System

indicator system

fire extinguishing system indicator disc

back-up hydraulic system failure indicator

continuously variable slope delta (CVSD)

forward slope

front slope

rear slope

reverse slope

reverse slope defense

slope distance

steep slope