by 
The Curious Bag
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The term DAFIF means Digital Aeronautical Flight Information File. This is a database with aeronautical data relevant to flying all over the world. Jeppesen is an information navigational company that offers information to rail, air and sea operations.
Significance
Pilots use up-to-date data from DAFIF to learn information about airspace, airways and navigational routes. The Jeppesen Company sells information and products to pilots and also provides aviation forecasts.
Control
DAFIF is a database controlled and managed by the National Geospatial-Intelligence Agency. Jeppesen is a company controlled and managed by a group of individuals.
Considerations
DAFIF provides critical and important information to help pilots make it to their destinations safely with a high degree of security measures in place. The Jeppesen Company specializes in selling pilot supplies, in areas of business, military and the government.
Facts
DAFIF is no longer available to the public and only US State and Federal government authorities have access to the data. Jeppesen offers navigational information to the public, but the services is expensive.
Warning
Research thoroughly all navigational information you receive, and make sure the information is coming from a very credible source.
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