![]() ALSF-2: Approach Lighting System with Sequenced Flashing Lights configuration 2. The RMS includes a remote Maintenance Processor Subsystem (MPS) interface. MALSR: Medium-intensity Approach Lighting System with Runway Alignment Indicator Lights. The NBP ALSF-2/SSALR system includes a Remote Monitoring Subsystem (RMS) that monitors the system status and provides diagnostic capabilities for the entire system. ![]() The system meets all of the lamp monitoring and failure reporting requirements of the latest ALSF-2/SSALR specification FAA-E-2689a Amendment 2.1.1. The mode and intensity of the Sequenced Flashing Lights are automatically selected based on the mode and brightness level of the steady burning approach lights. The steady burning approach lights are configured in five lighting loops controlled by dry-type Constant Current Regulators (CCRs). Some sources say the 2 means it’s designed. It’ll also help you remember that this Approach Light System with Flashers version 2 is the one with all the bells and whistles. The system can be controlled locally from the substation using the Control & Monitor (CM) or remotely from the Air Traffic Control Tower (ATCT) using the Remote Control Panel (RCP). Actually, a full ALSF-2 approach lighting system is usually 2400 feet, which is 800 yards, but I couldn’t resist the headline. The system can be installed in the full 3,000-foot lighting patterns (in compliance with the requirements of glide slope angle restrictions) or in the shorter 2,400-foot lighting patterns. The ODALS, which provides circling, offset, and straight-in approaches to non-precision runways, uses seven omnidirectional sequenced flashing lights along runway approach centerline. The system operates in two modes: a High Intensity Approach Lighting System with Sequenced Flashing Lights (ALSF-2), and a Simplified Short Approach Lighting System with Runway Alignment Indicator Lights (SSALR). ALSF -2: UPS, Terminal Boxes, Surge Arrestors, 30 KVA Transformer,Distribution Panels, HVAC System and Modems. The ALSF-2 places a five-light bar (approximately 13 feet long) at each 100-foot interval starting 100 feet across a distance of 2,400 feet. This type of system is less prevalent than other visual glide slope indicators like regular VASIs or PAPIs, as of May 2022 there were only 84 PVASIs installed at 51 airports and heliports in the United States and its territories according to Federal Aviation Administration data, compared to 6730 PAPIs and 623 VASIs.The ALSF-2/SSALR system is a Dual Mode High Intensity Approach Lighting System providing visual approach lighting patterns for landing aircraft on Category II and Category III runways. We have been involved in the Approach Lighting System with Sequenced Flashing Lights (ALSF, ALSF-2), Instrument Landing Systems (ILS), and Medium Intensity. Operational requirements dictate the sophistication and configuration of the approach light system for a particular runway. Is PAPI part of ALS?Īpproach Light Systems ( ALS ) provide the basic means to transition from instrument flight to visual flight for landing. ALSF-2, Approach Lighting System with sequenced flashing lights. The ALSF-2 may operate as an SSALR when weather conditions permit. The omnidirectional horizontal beam pattern, bright flashes and a sequential strobing flash pattern that rolls toward the runway threshold helps the pilot identify the runway in use. An approach lighting system (ALS) is a lighting system installed on the approach end of an. ALSF-2- Approach Light System with Sequenced Flashing Lights in ILS Cat-II configuration. ODALs (Omni-Directional Approach Lights) are used to identify the approach end and centerline of the runway. 4 For Category II/III landing minima, the ALSF-2 (High Intensity Approach Lighting System with Sequenced Flashing Lights) ALS is installed to provide the. ![]() The NBP 50 KW CCR receives 2400 Vac 10, single phase, 2 wire, 60 Hz 3 input power. FAA Type Number FA-10723 is a direct replacement to the Godfrey ALSF-2/SSALR oil-cooled 50 KW CCRs. The ALSF-II/SSALR system usually is a 2400-foot-long array of lights but can be longer or shorter depending on local terrain and requirements.Īpproach Lighting System with Sequenced Flashing LightsĪLSF I (Approach Lighting System with Sequenced Flashing Lights) is used on Category I runways during instrument landing approach to align the aircraft with the centerline of the runway and to establish vertical orientation. replacement to the Airflo ALSF-2/SSALR oil-cooled 50 KW CCRs. High Intensity Approach Light ing System. Visual Guidance Lighting Systems – Medium Intensity Approach Light System with Runway Alignment Indicator Lights (MALSR) The MALSR is a medium-intensity approach lighting system (ALS) installed in airport runway approach zones along the extended centerline of the runway.
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