The PRO APF 8" ICAO RCLI/TDZI/REXI is a versatile series of LED inset runway lights engineered to meet the demanding requirements of modern airport lighting systems, including ICAO Category I, II, and III runways, as well as military airfields. These fixtures serve multiple critical functions on the airfield. The RCLI (Runway Centerline Light) is a bidirectional fixture typically displaying white/white or white/red colors and is used to provide clear runway alignment guidance. The TDZI (Touchdown Zone Indicator) is a white, unidirectional light used to define touchdown zones for approaching aircraft, enhancing precision and safety during landing operations. Both RCLI and TDZI fixtures ensure excellent visibility under all operational conditions.
Additionally, the REXI (Rapid Exit Taxiway Indicator) function is incorporated to assist pilots in identifying the remaining distance to high-speed turnoffs, enhancing efficient runway usage and minimizing occupancy time. Typically arranged as six yellow lights aligned adjacent to the centerline in a 3-2-1 configuration spaced 100 meters apart, the REXI provides clear visual cues for deceleration and exit timing. Together, these functionalities make the PRO APF 8" ICAO RCLI/TDZI/REXI series essential for high-traffic airfields requiring superior lighting reliability and visual performance.
The PRO APF LED Series also stands out for its energy efficiency, offering total power consumption as low as 16VA for a Category III white/white fixture. The use of Wavetrac™ technology contributes to up to 60% power savings compared to incandescent alternatives, while the long-life LED engine is rated for over 50,000 hours of performance at 6.6A. These lights are designed to operate effectively in the harshest environments, with an operating temperature range from -40°C to +85°C, and feature an IP68-rated enclosure for complete protection against dust and water ingress.
Built for longevity and ease of maintenance, the fixtures utilize a modular design that reduces the number of parts to stock and simplifies service. They comply with ICAO Annex 14 Volume 1 and Part 4, NATO STANAG 3316, FAA AC 150/5345-46 (Current Edition), and EB67 (Current Edition), and incorporate a compliant dimming curve as defined in the latest Engineering Brief 67. High-frequency 400 Hz PWM operation minimizes flicker perception, while full CCR compatibility—including with Thyristor (Series) regulators and across 6 or 8 steps—ensures reliable integration into existing infrastructure. The 3.5 crest factor enhances CCR compatibility, and built-in 10kV/5kA surge protection safeguards against electrical disturbances.
To further support reliable performance, the fixtures include failure monitoring and are available with an optional Arctic Kit for extreme cold-weather environments. The low-profile design features an FAA Style 3 form factor with less than 0.25” (6.35mm) protrusion and supports IEC Style 3 with 6–13 mm low-protrusion housing. The PRO APF 8" ICAO RCLI/TDZI/REXI series combines efficiency, performance, and rugged construction, delivering dependable guidance lighting for precision airport operations.
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