Pilots flying in the Knik Glacier/Lake George area have used a Common Traffic Advisory Frequency (CTAF) for many years, described in a Flight Advisory in the Alaska Supplement. As of October 15, the design of that CTAF area changed in ways that are expected to improve communications in this area. At the same time there are some small changes made to the existing CTAF boundaries around Palmer. This is a result of a continuing effort of a government/industry working group to improve communications and reduce the potential for mid-air collisions in the Mat Su Valley.
The Knik Glacier, northeast of Anchorage, is a popular area for the aviation community to take advantage of the mountains and glacier scenery for flight seeing–and the gravel bars to land on–providing access to this spectacular landscape. Surrounded by mountains, it lacks radar coverage from ATC, or other infrastructure making it like much of Alaska; pilots must look out the window to see other traffic. A number of years ago, FAA assigned 122.7 MHz as the CTAF frequency for pilots flying in the area. Now that the FAA has formally defined the use of CTAF frequencies to discrete areas (in Alaska only), as opposed to just individual airports and landing areas, it made sense to re-look at this popular area and define a specific boundary, especially given the other CTAF areas in use in the Mat Su Valley. A revised CTAF map for the Knik has replaced the old Flight Advisory area in the October 15, 2015 edition of the Alaska Supplement (see Notices section page 412).
Knik High Traffic Areas Defined
The working group also received input from Flight Service and seasoned pilots that fly in this area both for business and for pleasure to define a set of commonly used reporting points, to improve situational awareness for pilots using the CTAF frequency. A rich set of commonly used points was identified, and are incorporated in a joint industry/FAA color map, in addition to the notice in the Alaska Supplement.
Other Refinements to the Mat-Su CTAF Areas
Based on feedback from pilots and airport owners, additional changes were made to CTAFs along the Matanuska River. The boundary of the Palmer CTAF Area, which uses 123.6 MHz, was expanded slightly to the north east, to incorporate the Crag Mountain airstrip (52AK). As they were not inside a defined CTAF area, the airports upstream from Crag Mountain were re-assigned to 122.9. A revised version of the Mat Su CTAF Area maps will also become effective on October 15, reflecting the Palmer boundary change.
A revised version of the FAA/industry google earth map has been printed, in both 11 x 17 inch and 8 ½ x 11 inch sizes. One side shows the overall Mat Su CTAF boundaries, and the other side has a larger scale map of just the Knik Glacier area, and high traffic reporting points. Copies should be available from Flight Service, the FAA FAAST Team, Medallion Foundation and the Alaska Airmen’s Association. You may also download your own copy from www.faa.gov/go/flyalaska . The Alaska Supplement has revised charts and descriptions in the Notices Section, and eventually we expect the Anchorage/Fairbanks Terminal Area Chart to be updated with these revisions.
Please pick up a copy of the new map, and help spread the word to your fellow aviators. In addition to these aids, fly with your lights on, and remember that “eyes out the window” is our primary tool to see-and-avoid other aircraft!
Alaska Supplement Notices: