Casco Cove Coast Guard Station (IATA: ATU[2], ICAO: PAAT, FAA LID: ATU) was a military facility and private use airfield on Attu Island, one of the Aleutian Islands in the U.S. state of Alaska.

[1] Owned by the United States Coast Guard,[1] Casco Cove CGS is located 1,481 miles (2,383 km) west of Anchorage, Alaska.

Also known as LORAN Station Attu, the facility was closed on August 27, 2010,[3] but the airfield remains available for emergency use.

The Casco Cove Airport was a LORAN navigation station operated by the United States Coast Guard.

Flying into and taking off from the airport was hazardous, as the weather is characterized by persistently overcast skies, high winds, and frequent cyclonic storms.