Which form grants access to the flight line?

AF Form 1199 is the correct answer because it is specifically designated as the access authorization form for the flight line and other restricted areas. This form is essential for personnel who require entry to security-sensitive areas on the airfield and ensures that only authorized individuals can access these locations. The access control provided by AF Form 1199 helps maintain security protocols necessary for safe air operations.

The other forms mentioned do not serve this purpose. They are used for various administrative tasks and processes within the Air Force but do not confer access to restricted areas. Understanding the specific roles of different forms in the military helps maintain operational security and efficiency.