Peter R. wrote:

Newps wrote:


The airlines will always fly the ILS if there is one up and running.
They are required to.


Is this a FAR requirement or airline's operational procedural requirement?

Both. The FAA makes sure the airline puts it into their ops specs. If
there is an operating ILS to the runway that they are landing on they
have to use it. If a controller clears pretty much any jet with no
restrictions on the size of the pattern almost without fail they will
turn final at the outer marker.