Plain English Meaning

A chart that tells the pilot how much higher or how much more visibility they need when something on the ground that helps them land is broken or turned off.

Full Definition

A published table that specifies how an instrument approach procedure's minimums must be raised when certain ground-based approach components or visual aids are out of service. It lists the affected equipment (such as approach lights, the glideslope, or middle marker) and the corresponding increase to visibility minimums or the change in decision altitude that the pilot must apply.

Context Anchor

Seen when reviewing instrument approach minimums before flying an approach, especially after checking about or equipment outages.