Description: Airspace designated for hazardous military activities, such as live weapons training. All aircraft not associated with these activities are restricted from entry. This layer is a member of the "Military" feature dataset, which contains layers related to military installations and flight training areas in the state of Maryland. Data source: Military Aviation and Installation Assurance Siting Clearinghouse website (https://www.acq.osd.mil/dodsc/about/maps.html) Last updated: 2020. Recommended data update schedule: yearly Contacts sources: websites for the military installation to which each restricted area belongs. Recommended to check for updates when checking for new restricted area data, approximately yearly.
Copyright Text: Military Aviation and Installation Assurance Siting Clearinghouse
Description: Contains boundaries of Department of Defense (DoD) sites: installations, ranges, training areas, etc. in the state of Maryland. These boundaries are intended for planning purposes only and do not represent the legal or land-surveyed boundaries. Sites under 10 acres and valued at less than $10 million are not included as stipulated by DoD standards. This layer is a member of the "Military" feature dataset, which contains layers related to military installations and flight training areas in the state of New Mexico. Data Source: Office of the Assistant Secretary of Defense for Sustainment website (https://www.acq.osd.mil/eie/BSI/BEI_DISDI.html) Last updated: Data available for prior fiscal year (FY). For example, FY 2018 data was available in calendar year 2019. Recommended update schedule: check for new, altered, or closed installations yearly.
Description: Areas surrounding military runways that must be kept clear of objects that could damage an aircraft. This layer is a member of the "Military" feature dataset, which contains layers related to military installations and flight training areas in the state of Maryland.
Description: Joint Base Andrews conducts low-level helicopter training operations across areas in southern Maryland and northern Maryland including along the Potomac River.There are three separate low-level flight areas associated with training at NAS Patuxent River, two of which are in Maryland – East Helicopter Operating Area and West Helicopter Operating Area. Both low-level flight areas cover a broad area of land across Calvert County, Dorchester County, St. Mary’s County, and Wicomico County in which NAS Patuxent River conducts low-level flight training operations with rotary-wing and some fixedwing aircraft.Some military flight training is conducted at altitudes below 10,000 feet above mean sea level, and sometimes even below 200 feet AGL. For example, nap-of-the-earth training exercises include aircraft flying just above ground level or tree line using terrain-following sensors to avoid radar detection. Due to the low altitudes and speeds of the aircraft, these training missions are conducted within designed low-level flight areas to avoid collisions with civilian aircraft. However, the development of tall structures can interfere with and create hazards for aircraft conducting low-level flight training.
Copyright Text: Joint Base Andrews, NAS Patuxent River, 2020.