Answer :
The key difference between non-139 and 139 airports is their regulatory requirements, with 139 airports adhering to stricter safety standards.
The primary difference between non-139 airports and 139 airports lies in the regulatory requirements set by the Federal Aviation Administration (FAA). While Part 139 airports must comply with stringent safety regulations, including aircraft rescue and firefighting, non-139 airports are generally exempt from these specific obligations.
Part 139 airports are responsible for maintaining certification, conducting regular inspections, and meeting specific operational procedures. Conversely, non-139 airports, often smaller and less busy, have more flexible regulatory standards.
