Aviation abbreviation
Precision Approach Path Indicator
At a glance
Meaning of Precision Approach Path Indicator
A visual light system indicating an aircraft's position relative to an approach slope.
More about Precision Approach Path Indicator
A Precision Approach Path Indicator uses a pattern of red and white lights to show whether the aircraft is above, below or near the intended slope.
Its guidance must be interpreted within the published conditions. It does not replace lateral alignment, obstacle assessment or an instrument approach clearance.