Since Arlington Airport is fairly popular among RV'ers. From Airport Management:
Arlington Municipal Airport (KAWO) will be changing the CTAF frequency used at the airport from 122.7 to 122.725 beginning March 29th. Charts and field directories may or may not reflect this change so it is important to make a note of the change in frequency and always check your NOTAMS for information. If you have any questions please contact the airport at 360-403-3470.
A NOTAM has been issued. Thank you.
Lorene Robinson, C.M.
Airport Operations Specialist
Arlington Municipal Airport
18204 59th Ave NE
Arlington, WA 98223
This change is due to the congestion on the existing CTAF frequency with other airports in the area.