Palmdale Regional Airport (PMD/KPMD) is a public-use airport located in Palmdale, California, in the Antelope Valley region of Los Angeles County. It serves both commercial passengers and, uniquely, operates alongside USAF Plant 42, a major military aircraft production and test facility used by contractors such as Lockheed Martin and Northrop Grumman. The airport has historically struggled to attract consistent commercial airline service due to its distance from the Los Angeles urban core and competition from nearby major airports. It sits at an elevation of approximately 2,543 feet above sea level and covers a large area suited to long-range test flights. In recent years, efforts have been made to revitalize commercial service at PMD, including infrastructure investments and outreach to carriers. Its proximity to aerospace manufacturing facilities makes it strategically important beyond its modest passenger volumes.