Definition
A computer-based system that captures, stores, analyzes, and displays data tied to specific geographic locations, allowing layered information such as terrain, airspace, obstacles, weather, and infrastructure to be viewed together on a map.
Plain English
Software that combines maps with data, so you can see information about real places — like terrain heights, airports, or weather — layered on top of one another.
Context Anchor
Pilots may see GIS mentioned in aviation mapping, digital chart data, airport planning, terrain information, and obstacle databases.
Derivation
From 'geographic' (relating to places on Earth, from Greek geo- meaning 'earth' and graphia meaning 'description') and 'information system' (a system for organizing and retrieving data). Together it means a system that organizes information by where it sits on the Earth.
Why Pilots Care
Supports precise navigation, obstacle identification, and custom mapping used in modern avionics and preflight planning.
Intuition Check
A GIS is not just a picture of a map. It is a map connected to stored information, so the system can show, compare, and update location-based details.
Example Sentence 1
The flight planning app uses GIS data to show terrain elevations and special use airspace along the proposed route.
Example Sentence 2
Flight planning tools overlay airport information using GIS layers.