Runway light L-88 series

approachPAPIfor airport runway

The second-generation RELIANCE PAPI system uses an LED light channel on each light unit to provide the pilot precise visual information, enabling the approach procedure to be performed with the utmost accuracy and safety. The Type L-880(L) PAPI system consists of four light units located at the side of the runway adjacent to the origin of the glide path. The nominal glide slope angle is midway between the angular settings of the central pair of the four units. If an aircraft is on the correct approach path, the pilot will see two red and two white light indicators. If the aircraft approach is too high, an increased number of white light indicators will be seen. If the approach is too low, the pilot will note an increased number of red light indicators. The Type L-881(L) PAPI system is an abbreviated PAPI system. It is identical to the L-880(L) PAPI system, except it consists of only two light units (instead of four). The Style A system is for use with an AC voltage input. The Style B system is for use on 6.6 A or 20 A series circuits. Features • LEDs greatly increase light source life and significantly reduce ongoing maintenance costs and periodic relamping expenses. • Average LED life of 60000 hours under high-intensity conditions and more than 150000 hours under typical operating conditions. • Each light unit uses a maximum 120 W when the heater is active. • Depending on operating mode, light unit uses 62 % to 80 % less energy than traditional light units that use three 105 W lamps, two 200 W lamps or three 200 W lamps. • Unique, sealed optical chamber is designed to prevent dew/frost on LED optical elements.