The Aviation Digital Data Service (ADDS) is a website and service provided by the National Weather Service (NWS) that offers a range of digital aeronautical weather products and services to support aviation safety and efficiency.

The main goal of ADDS is to provide pilots, dispatchers, and other aviation professionals with access to timely and accurate weather information to help them make informed decisions about flight planning, weather avoidance, and overall safety.

Some of the key features and products available on ADDS include:

1. Graphical weather forecasts and observations
2. Text-based weather forecasts and warnings
3. Radar and satellite imagery
4. Model output and forecasts from the National Centers for Environmental Prediction (NCEP)
5. Winds and temperatures aloft forecasts
6. Icing and turbulence forecasts
7. Ceiling and visibility forecasts
8. Weather advisories and warnings

ADDS is designed to be user-friendly and accessible, with a web-based interface that allows users to easily access and visualize the data. The service is also available through mobile devices, making it convenient for pilots and other aviation professionals to access critical weather information on the go.

Overall, the Aviation Digital Data Service is an essential tool for the aviation community, providing critical weather information to support safe and efficient flight operations.