Runway light PAPI
PAPIpositionfor airport runway

runway light
runway light
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runway, PAPI, position
for airport runway
Other characteristics
red, white


The PAPI System provides the pilot a positive visual indication of the aircraft’s position relative to the optimal glide slope during final approach to the runway. The L-880 PAPI System consists of four units in a line or bar, each unit having two or three 200 watt lamps. The PAPI unit produces a beam of light, the upper portion being white, the lower red. As the pilot's vertical position changes, the color of the light as seen by the pilot changes instantaneously. The Style A PAPI uses a Power and Control Unit (PCU) which has a photocell for automatic day/night intensity control. The PCU can be operated by using an L-854 radio controller signaled by an approaching aircraft. The Style B PAPI is powered by an L-828 constant current regulator. Certifications and compliances FAA AC 150/5345-28 Current Edition: L-880 and L-881 ICAO Annex 14 FEATURES ETL certified 1500 hour lamps Meets ICAO recommendations Sharp signal transition: 3 minutes of arc Precise setting tool: ±2 minutes of arc Lamp bypass circuit (Style B) Tilt switch indicator lights (Style B)
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