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PAPI - Precision Approach Path Indicator

PAPI Precision Approach Path Indicator Certified to FAA AC 150/5345-28
(Current Edition)
Provides pilots with highly accurate visual confirmation of correct glide slope.

Precision approach path indicators ensure an accurate vertical approach to an airfield. During descent, pilots activate a PAPI system (along with other airport lights) by keying the microphone with the aircraft radio tuned to the CTAF or dedicated PAL frequency.

Airport Lighting Company's PAPI systems are built with strict optical and mechanical tolerances since pilots depend on them for critical feedback during landing. ALC's precision approach path indicators provide consistent photometric performance in even the harshest environmental conditions.

  • Easy to align - Intuitive aiming device simplifies setting of elevation and azimuth. No optical bench or specialzed equipment is required.
  • Sturdy and reliable - Stable housing prevents disruptive shut-downs for realignment, reduces maintenance and increases airfield lighting usage.
  • Designed to your specs - Options include an interlock to allow operation only with runway lights and an external lamp out service indicator.
  • Built for your airport - Please let us know if your airfield has unique installation requirements or modification needs.
  • Available now for your airfield - Call Airport Lighting Company today at (315) 682-6460 or email us for an immediate price quote.
PAPI Precision Approach Path Indicator
Reliable PAPI systems are essential for safe airfield approach and landing operations.

Precision approach path indicator lighting is installed ±1,000 feet past the landing threshold of a runway, on the left hand side. PAPI lights are required on both sides of a runway if an airport has international services.

PAPI units are positioned perpendicular to the runway center line and typically spaced 20-30 feet apart. Lights can be seen up to five miles during the day and twenty miles at night.

Each unit is has an optical array that splits light output into red and white parts. Depending on approach angle, lights appear either red or white. Normal glidepath is achieved when there is an equal number of red and white lights. If an aircraft is too low, red lights will outnumber white. If the aircraft is too high, more white lights are visible.

For more information about PAPI or a price quote for our Precision Approach Path Indicators, call Airport Lighting Company at (315) 682-6460 or email us today.