Photo Information Construction of a new 26,000 square foot facility is underway next to the fuel cell hangar. Completion date of the $10 million KC-135 maintenance hangar is scheduled for December 2010. Download Details Share New hangar construction 2 May 2010 | PRINT SHARE TINKER AIR FORCE BASE, Oklahoma -- Construction of a new 26,000 square foot facility is underway next to the fuel cell hangar. Completion date of the $10 million KC-135 maintenance hangar is scheduled for December 2010.