The group seeking to build an airport just outside Oskaloosa has reached a deal to buy a parcel of land for that airport.  The South Central Regional Airport Agency agreed to buy property from the Elizabeth V. Barnard Living Trust.  At a special meeting late last week, the Oskaloosa City Council voted unanimously to put up $366,000 as its share of the purchase price.  According to City Council documents, the City of Pella will reimburse Oskaloosa 90 percent of that money once Pella receives grant money from the Federal Aviation Administration.  The City of Oskaloosa had the money to buy the property from proceeds of the sale of what’s called non-aeronautical land at the Oskaloosa Municipal Airport.