The AV-SSFL (Sequenced Flashing Light) is a self-contained, high-performance approach lighting system engineered to enhance runway visibility and directional guidance for pilots during aircraft landings. Designed for installation along the runway centerline, the AV-SSFL emits synchronized strobing flashes that create a sequential lighting pattern, visually guiding pilots toward the touchdown zone. This advanced system is powered by either AC mains electricity or solar energy, offering flexible deployment across a wide range of environments and airfield configurations.
The AV-SSFL is available in two chassis configurations tailored to different operational needs. The first is a composite polymer chassis integrated with solar panels and a battery backup system, making it ideal for off-grid, expeditionary, or temporary installations. The second is an aluminum chassis equipped with a user-replaceable internal battery, designed for applications where maintainability and rugged performance are essential. Both chassis options house an integrated battery system capable of supporting extended operation, with the solar version further enhancing energy efficiency and autonomy in remote settings.
Designed for seamless integration into standardized approach lighting systems, the AV-SSFL is fully compatible with popular configurations such as MALSR (Medium Intensity Approach Lighting System with Runway Alignment Indicator Lights), SSEALS (Simplified Short Approach Lighting System with Sequenced Flashers), and SALS (Short Approach Lighting System). In the MALSR setup, the AV-SSFL functions alongside six steady-burning barrettes, 15 stand-alone steady-burning lights, and five sequenced flashing lights. The SSEALS configuration pairs it with seven steady-burning lights and three flashers, while SALS includes 17 stand-alone steady-burning units. This modular adaptability ensures the AV-SSFL enhances approach path definition in various airport layouts and mission profiles.
Powering the AV-SSFL system is highly customizable. Operators can choose between solar-only setups, AC with battery backup, or a hybrid configuration combining AC, battery, and solar for maximum redundancy and resilience. The integrated power system includes a 100-watt monocrystalline solar module regulated by an MPPT (Maximum Power Point Tracking) charger. The onboard battery uses Absorbent Glass Mat (AGM) technology with a 25Ah capacity and a nominal 12V output, while the charging system is rated at 45W and accepts input voltage from 90 to 264VAC at 50/60 Hz. These components ensure reliable energy storage and optimized power delivery even in fluctuating conditions.
Optically, the AV-SSFL features multi-LED technology that emits bright, white strobing light. The system supports five-step intensity adjustment, allowing visibility to be tailored for day, night, or varying weather conditions. At maximum brightness, the unit operates for four continuous hours, with LED life expectancy exceeding 100,000 hours—minimizing maintenance and maximizing long-term reliability. The system is also available with IR or NVG output modes, enabling covert or night-vision-compatible operations, particularly useful in military and tactical airfields.
Constructed from painted steel and aluminum, the AV-SSFL's housing is built for longevity and environmental resilience. It includes an acrylic lens with a multi-LED optic design, offering optical precision and physical durability. The compact form factor measures 703 mm in height, 329 mm in length, and 302 mm in width, with a total mass of 25 kg (55 lbs). Mounting is facilitated via two through-holes arranged on a 200 mm diameter circle. The system is rated for a wide temperature operating range from -40°F to 122°F (-40°C to 55°C), with a service life of up to 12 years. Wind load ratings reach up to 300 mph (483 kph) for the light unit and 125 mph (201 kph) for the solar panels, ensuring stable performance under extreme weather conditions.
With its versatile power options, robust construction, and compatibility with global approach lighting configurations, the AV-SSFL stands as a reliable and efficient solution for enhancing runway approach visibility at both civilian and military airfields. Its portable and permanent deployment capabilities make it ideal for use in fixed airports, expeditionary bases, emergency landing strips, and other temporary aviation operations.
https://www.avlite.com/product/stand-alone-sequenced-flashing-light-av-ssfl/
