Cape TRACON
The Cape TRACON (K90) is a radar approach facility located at Joint Base Cape Cod, Massachusetts next to the airfield for Coast Guard Air Station Cape Cod. It is operated by the Federal Aviation Administration (FAA). The primary responsibility of Cape Approach is the safe, orderly, and expeditious flow of arrival, departure, and inter-island traffic in and around the Cape and Islands area of Massachusetts, at and below 10,000 feet MSL. K90 is responsible for providing arrival and departure, and radar services the following airports: Cape TRACON is open daily from 6:00 am (local) until 10:00 pm  local. During the summer months the facility is open until 11:00 pm (local). When the facility is not open, air traffic control services are provided by Boston ARTCC, Area D. Airspace. Cape TRACON is responsible for the airspace approximately 30-40 nautical miles from Hyannis airport at and below 10,000 feet. In the vicinity of the Plymouth Airport, K90 is responsible for the airspace at and below 7,000 feet. Boston ARTCC is responsible for the airspace above the TRACON's. K90 is bordered to the west by Providence Approach, to the north by Boston TRACON, and the rest by Boston  ARTCC, Area D. Cape Approach operates two radar and ARTS systems. Their ASR-8 system is located at the facility and the ASR-9 system is located on the field at Nantucket Airport. The ASR-9 system was added to improve the radar coverage of the Nantucket airspace. These two systems work independently of each other but sit side-by-side in the control room. When one system is out of service (for scheduled and non-scheduled maintenance), the other system can be used as a backup (with some limitations). North Side Radar System. The ASR-8 Radar and ARTS systems have 4 sectors  of airspace: South Side Radar System. The ASR-9 Radar and ARTS systems have 2 sectors of airspace: Other Operational Positions. Cape TRACON also operates 2 Flight Data positions: