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3 Answers

Radar Notation

Asked by: 4456 views Airspace, FAA Regulations

Reference KSUS   ILS 8R:

Why the notation "Radar" above Snoop LOM? If you have ADF or GPS you can identify Snoop. I guess if Snoop is out of service and you do not have GPS but only ADF then ATC radar is the only way to identify Snoop, of which would be of use to identify Snoop as the FAF for the localizer only approach.

Further, I see the ILS 26L at KSUS does not have the" Radar" notation over Eaves LOM. I am curious as to why Eaves LOM does not have the "Radar" notation and is at the same airport.

Any insight appreciated.

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3 Answers



  1. Mark Kolber on Dec 31, 2013

    Notice that neither of these two approaches have an “ADF Required” notation. That’s because both of the LOMs have an official alternative way of identifying them. In one case, it’s radar; in the other case a cross-radial.

    All the “RADAR” note under the LOM box on the 8R approach is telling you is that radar is an official alternative means of identifying the fix if you don’t have ADF or a substitute (like GPS). OTOH, the “RADAR” notation is not needed for the 26 approach because, as it says under the box, the LOM is also identifiable as the intersection of the localizer and the STL R194°

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  2. Dan Chitty on Dec 31, 2013

    Thank you Mark. Very good explanation and always much appreciated.

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  3. Jim F. on Jan 01, 2014

    What Mark said.

    But good luck actually needing that knowledge; I have to beg for the 8R just to get something different from the usual 26L… 🙂

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