In fog or low visibility, pilots do not rely on lights alone. They use a combination of instrument procedures and visual aids. Airport lighting becomes essential when the pilot transitions from instrument guidance to visual reference near the runway.
High-intensity approach lights, runway centerline lights, touchdown zone lights and runway edge lights help pilots identify the runway environment and maintain alignment during the final phase of approach and landing.
For CAT II and CAT III operations, the availability and serviceability of lighting systems are safety-critical. A degradation of runway lights, approach lights or reserve power can affect the operational category, published minima or availability of low-visibility procedures, depending on the local regulatory framework.
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Approach lights, runway centerline lights, touchdown zone lights, high-intensity runway edge lights, CCR, ALCMS, ILCMS.
