Question: Both the Appleton International Airport and the Pellston Regional Airport are categorized as what by the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021?
Context: West Michigan Regional Airport (ICAO: KBIV, FAA LID: BIV) , formerly "Tulip City Airport", is a public-use airport located two nautical miles (3.7 km) south of the central business district of Holland, a city in Allegan County, Michigan, United States.  It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a national general aviation facility. Green Bay–Austin Straubel International Airport (IATA: GRB, ICAO: KGRB, FAA LID: GRB) , is a county-owned public use airport in Brown County, Wisconsin, the United States serving Northeast Wisconsin.  The airport is located seven nautical miles (13 km) southwest of downtown Green Bay, in the village of Ashwaubenon.  It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a non-hub primary commercial service facility.  In previous years the FAA categorized the airport as a small hub.  It sits on portions of land encompassing Green Bay and the Oneida Nation of Wisconsin's Indian reservation.  It has two runways and is used for commercial air travel and general aviation.  There are two concourses with six gates each, the first concourse was completed in July 2004 and the second concourse was completed in December 2005.  They were designed by Mead & Hunt, Inc. Asheville Regional Airport (IATA: AVL, ICAO: KAVL, FAA LID: AVL) is a Class C airport near Interstate 26 near the town of Fletcher, 9 mi south of downtown Asheville, in the U.S. state of North Carolina, United States.  It is owned by the Greater Asheville Regional Airport Authority.  It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a non-hub primary commercial service facility.  In 2016 it served an all-time record number of passengers for the airport, 826,648, an increase of 5% over 2015 and the third consecutive year of record traffic. New Richmond Regional Airport (ICAO: KRNH, FAA LID: RNH) is an active general aviation airport located in the city of New Richmond, Wisconsin, United States.  The airport is owned and operated by the City of New Richmond.  It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a local general aviation facility.  The State of Wisconsin classifies the airport as a Corporate/Transport airport. Appleton International Airport (IATA: ATW, ICAO: KATW, FAA LID: ATW) , formerly "Outagamie County Regional Airport", is an airport located in Outagamie County, Wisconsin, United States, just west of Appleton in the town of Greenville.  It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a non-hub primary commercial service facility.  It is the fourth-busiest commercial airport in Wisconsin in terms of passengers served.  In 2016 the airport contributed $676 million dollars to the Northeastrn Wisconsin economy. W. K. Kellogg Airport (IATA: BTL, ICAO: KBTL, FAA LID: BTL) is a city owned, public use, joint civil-military airport located three nautical miles (6 km) west of the central business district of Battle Creek, a city in Calhoun County, Michigan, United States.  The airport is accessible by road from Helmer Road, and is located near I-94.  It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a regional general aviation facility.  It is also known as W. K. Kellogg Regional Airport. Pellston Regional Airport (IATA: PLN, ICAO: KPLN, FAA LID: PLN) , also known as Pellston Regional Airport of Emmet County, is a public airport located one mile (2 km) northwest of the central business district of Pellston, a village in Emmet County, Michigan, United States.  It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a non-hub primary commercial service facility. Wittman Regional Airport (IATA: OSH, ICAO: KOSH, FAA LID: OSH) is a county owned public use airport located two nautical miles (4 km) south of the central business district of Oshkosh, a city in Winnebago County, Wisconsin, United States.  It is located adjacent to Pioneer Airport, part of the EAA Aviation Museum.  The airport was named after pioneer air racer, aircraft designer and builder Steve Wittman in 1972.  Originally named "Winnebago County Airport", the name "Steve Wittman Field" was proposed in 1968 and it is also known as Wittman Field.  It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a regional general aviation facility. Southwest Michigan Regional Airport (IATA: BEH, ICAO: KBEH, FAA LID: BEH) is a public use airport located two nautical miles (4 km) northeast of the central business district of Benton Harbor, a city in Berrien County, Michigan, United States.  The airport is owned by the cities of Benton Harbor and St. Joseph, Michigan.  It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a regional general aviation facility. Bishop International Airport (IATA: FNT, ICAO: KFNT, FAA LID: FNT) is a commercial and general aviation airport located in Flint, Michigan.  It is named after banker and General Motors board member Arthur Giles Bishop (April 12, 1851 – January 22, 1944), who donated 220 acres of his farmland for the airport in 1928.  The third busiest airport in Michigan, it surpassed competitor MBS International Airport in terms of airline operations in 2002.  In 2007, 1,071,238 passengers used Bishop International Airport; in 2011, 938,914 passengers used the airport.  It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a small hub primary commercial service facility.  The airport is currently served by several passenger airlines: Allegiant Air, Southwest Airlines and Delta Air Lines operate mainline service out of the airport, as well as affiliates of Delta Connection, United Express and American Eagle.  Additionally, FedEx Express and a FedEx Feeder affiliate operate cargo services out of the airport.  Accompanying the airlines is fixed-base operator Av Flight that handles both general aviation and airline operations and the flight school American Wings Aviation.  Bishop International Airport is in southwestern Flint, and is surrounded by Flint Township to the north, east and west; and Mundy Township to the south.
Answer: non-hub primary commercial service facility