The PRO III 12" RCLI/TDZI light is a versatile in-pavement airfield lighting fixture engineered to serve multiple critical functions across runway and taxiway operations. Designed for use as a Runway Centerline Light (RCLI), Touchdown Zone Light (TDZI), or Rapid Exit Taxiway Indicator Light (REXI), this fixture delivers reliable visual guidance under a variety of operational conditions on ICAO and military-category runways. Its flexibility, durable construction, and compliance with international standards make it suitable for high-performance aviation environments.
When configured as a runway centerline light (RCLI), the PRO III 12" fixture can operate in both bidirectional and unidirectional modes. Typical optical configurations include clear/clear or clear/red beam outputs, and the light utilizes two 48-watt quartz halogen lamps for bright, consistent illumination. As a touchdown zone light (TDZI), the unit functions as a clear unidirectional light using a single 48-watt halogen lamp, providing essential lighting cues for safe aircraft landings. When applied in rapid exit taxiway applications (REXI), the fixture uses one 48-watt lamp in a green/blank configuration to guide aircraft safely and efficiently off the runway. The fixture can also be configured as a yellow unidirectional light for general taxiway use, helping manage ground traffic flow and reduce congestion in high-traffic areas.
The PRO III 12" RCLI/TDZI/REXI is fully compliant with ICAO Annex 14 guidelines and conforms to Figures 2.5, 2.6, and 2.7, ensuring global interoperability and performance consistency across regulated airfields. Its design features include a low-profile build of less than 0.25 inches (6 mm) above the pavement, which meets FAA Style 3 requirements and minimizes interference with aircraft and ground vehicle movement. The optical assembly is made from high-strength aluminum, offering outstanding resistance to corrosion and mechanical stress in harsh airport environments.
This lighting fixture is designed with both reliability and serviceability in mind. It consumes low power and is built with a minimal number of stock parts, simplifying maintenance and logistics. Beam orientation can be easily adjusted for left or right toe-in, allowing for customized field alignment without the need for complex tools. Maintenance operations are further simplified by a tool-free design—no sealant is required to replace the prism or feedthrough assemblies. A built-in pressure test plug allows for straightforward verification of seal integrity, ensuring continued weather and moisture protection. The use of long-life 48-watt quartz halogen lamps provides dependable illumination with minimal downtime, while the housing exceeds the structural strength standards of FAA AC 150/5345-46, offering a rugged and lasting solution for demanding airfield lighting requirements.
https://www.eaton.com/us/en-us/catalog/airfield-lighting/pro-iii-12-rcli-tdzi-runway-centerline-touchdown-zone-light-icao.html
