"Ron Rosenfeld" wrote in message
...

This approach is marked radar required, and there is no charted feeder
route to the IAF. So one approaches via a random route under radar.

ATC will not issue an approach clearance until within 15 miles of
the NDB. In the past I was told this was due to their need to
ensure the a/c was within the service volume for the facility.

However, if the a/c is using GPS and executing the GPS Rwy
33 approach, what is the point of delaying clearance issuance
until 15 miles out?


None. Nor is there any point in delaying clearance issuance if the aircraft
is using the NDB, as ATC is providing radar monitoring.