Plain English Meaning
A close-up VFR map of the airspace around a major airport. Because everything is drawn larger, you can see exactly where the complex airspace shelves sit and what visual landmarks to follow when flying near a big city.
Full Definition
A large-scale aeronautical chart, published by the FAA at a scale of 1:250,000, that depicts the airspace surrounding busy Class B airports in detail for use by pilots flying under Visual Flight Rules. It shows airspace boundaries, floors and ceilings, navigation aids, airports, terrain, obstructions, and visual landmarks at greater resolution than a Sectional Chart.
Context Anchor
Used during preflight planning and in when a goes near a major airport or through a crowded airport .