Pinal Airpark, also known as Pinal County Airpark, is a non-towered, county-owned, public-use airport located 8 miles northwest of the central business district of Marana, in Pinal County, Arizona, United States. Silverbell Army Heliport is co-located with Pinal Airpark. The heliport is a private-use military facility operated by the Arizona Army National Guard.

An aircraft boneyard or aircraft graveyard is a storage area for aircraft which are retired from service. Most aircraft at boneyards are either kept for storage continuing to receive some maintenance or parts of the aircraft are removed for reuse or resale and the aircraft are scrapped. Boneyard facilities are generally located in deserts such as those in the southwestern United States, since the dry conditions reduce corrosion and the hard ground does not need to be paved. In some cases, aircraft which were planned to be scrapped or were stored indefinitely without plans of ever returning to service were brought back into service, as the aviation market or the demands of military aviation changed or failed to develop as was anticipated.