FIS-B Decode ('fisb-decode') is a back-end system for processing FIS-B (Flight Information System - Broadcast) messages transmitted on 978 Mhz, mostly in the United States. FIS-B primarily contains meteorlogical information to be used in flight. This implementation roughly follows the DO-358B standard.

'fisb-decode' is composed of two main parts:

• The capture part of the system ('fisb') is a good way to explore the internal structures of FIS-B and can be used as a stand-alone system for this purpose. 'fisb' is a multi-level system that turns binary FIS-B messages into fully independent weather messages.
• The database part of the system ('harvest') creates .png images, turns vector data into geojson, and manages the FIS-B message-base using mongoDB.

'fisb-decode' is strictly a back-end 'meat and potatoes' system. It does not provide a web-based interface for humans. It is certainly possible to create front-end systems using fisb-decode, but fisb-decode is not that system.

FIS-B Decode is not designed, nor intended, to be used for any purpose other than fun exploration.

⚠️ WARNING
FIS-B Decode is NOT intended for actual flight use, nor to be used as a component of a system for any flight related operations (flight planning, etc). It is strictly a fun hobby program with many bugs. It is based loosely on draft standards, not actual standards, and has not undergone any formal testing. DO NOT USE OTHER THAN FOR FUN-- NOT FLIGHT!!

To get started with FIS-B Decode, see the file 'fisb-decode-intro.pdf' in the fisb-decode/docs directory.