Modification of Class D and Class E Airspace, Bellingham, WA

This action modifies the Class D airspace at Bellingham, WA, by amending the effective hours to coincide with the Bellingham Airport Traffic Control Tower (ATCT) hours of operation. This action also modifies the Class E airspace extension at Bellingham International Airport when the Bellingham ATCT is closed. The effect of this action clarifies when two-way radio communication with Bellingham ATCT is required and provides adequate controlled airspace when the Bellingham ATCT is closed.