Plain English Meaning

If something needed for an instrument approach is broken — like an approach light system or the glide slope — this table tells you how much higher or how much more visibility you need before you can legally land. It’s a lookup table for adjusting your minimums when equipment is out.

Full Definition

A table published in the front of each volume of FAA Instrument Approach Procedures (IAP) charts that specifies the increases in landing minimums (visibility and/or decision altitude/MDA) required when certain airborne or ground-based components — such as approach lights, glide slope, or ALSF lighting — are out of . It allows a to determine the adjusted minimums for a when a listed component is .