Precision Approach Path Indicator (PAPI) 2
Precision Approach Path Indicator (PAPI) 2 :
An approach path indicator system consisting of four light units situated on the left side of the runway (on both sides of the runway, in the case of the military) in the form of a wing bar. The aircraft is on slope if the two units nearest the runway show red and the two units furthest from the runway show white, too high if all units show white, and too low if all units show red. A PAPI can be situated so as to provide three types of eye-to-wheel height (EWH): P1 (10 ft) , P2 (25 ft) and P3 (45 ft) . See also
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