Martha's Vineyard Airport and Erie International Airport, are which class of airport?
Martha's Vineyard Airport Martha's Vineyard Airport (IATA: MVY, ICAO: KMVY, FAA LID: MVY) is a public airport located in the middle of the island of Martha's Vineyard, three miles (5 km) south of the central business district of Vineyard Haven, in Dukes County, Massachusetts, United States. This airport is owned by Dukes County and lies on the border between the towns of West Tisbury and Edgartown. It is often used for general aviation but is also served by four commercial airlines.
Massena International Airport Massena International Airport (IATA: MSS, ICAO: KMSS, FAA LID: MSS) , also known as Richards Field, is a public use airport in St. Lawrence County, New York, United States. It is located two nautical miles (4 km) east of the central business district of Massena, a village in the Town of Massena, which owns the airport. The airport is mostly used for general aviation, but is served by one commercial airline, subsidized by the Essential Air Service program.