Delhi Airport Switches to CAT III Amid Fog: What It Means for Your Flight

• Delhi's Indira Gandhi International Airport is operating under CAT III conditions due to dense fog, causing flight disruptions.
• CAT III is the highest category of Instrument Landing System (ILS), enabling precision landings with minimal visual cues.
• Pilots rely on instruments, with key terms like Decision Height (DH) and Runway Visual Range (RVR) defining sub-categories (CAT IIIA, CAT IIIB).
• Delays persist as not all aircraft/crew are CAT III certified, and ground operations slow down in low visibility.
• CAT III is runway-specific, requiring appropriate ILS standards, lighting, and monitoring for operations.

Why It Matters: CAT III allows landings in dense fog, but flight delays can still occur due to various operational factors.