PAPI - precision approach path indicator, a system of coloured lights installed at the approach end of a runway which provides visual guidance to the correct glidepath. A successor to VASI, below.
PAPI
Precision Approach Path Indicator
PAR
Precision Approach Radar - a ground-radar based instrument approach which provides both horizontal and vertical guidance ...
Precision approach path indicator (PAPI)
Precision Approach Path Indicator (PAPI) -
Precision Approach Procedure
Precision runway monitor (PRM)
Preferred IFR routes
Preprogrammed course reversal ...
PRECISION APPROACH PATH INDICATOR (PAPI) - An airport lighting facility in the terminal area navigation system used under VFR conditions (see also), through a single row of two to four lights, ...
Precision Approach Path Indicator (PAPI) - Provides visual approach slope guidance to aircraft during an approach. It is similar to a Visual Approach Slope Indicator but provides a sharper transition between the colored indicator lights.
 See also: Power, Flight, Aircraft, Landing, Runway
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