KAOO Altoona Blair County Airport MSFS https://www.airnav.com/airport/KAOO

Altoona–Blair County Airport (IATA: AOO, ICAO: KAOO, FAA LID: AOO) is a county owned, public airport in Martinsburg, Pennsylvania, 14 miles south of Altoona, in Blair County, Pennsylvania.

It is owned by the Blair County Airport Authority. The airport has a few airline flights, subsidized by the Essential Air Service program.