Hali-Brite L-880/L-881 Precision Approach Path Indicator (PAPI) is a three-lamp
approach lighting system located near the runway threshold to assist pilots
in establishing an approach path. This lighting system typically displays five
different red and white light patterns.
The PAPI System consists
of a three-lamp Light Housing Assembly as the main
Additional components include
Power and Control Unit, Series Circuit Lamp shorting
devices with integral tilt switch and Aiming
The PAPI is a low-power
consumption energy efficient system. Each Lamp
Housing Assembly draws a nominal 300 watts as opposed
to other 400- to 600-watt systems.
The size and
weight of the PAPI Lamp Housings is up to 30%
less than other systems.
Most routine service components
can be changed without requiring hand tools.
The Lamp Housing Assembly can be mounted on wide range of 3-leg mounting patterns. Standard mounting is on a 22" across the front and 16" front to back. Four additional mounting configurations are available for retrofit on most 3-leg PAPI existing mounts.