(1) All leasehold interests in port district facilities exempt from tax under RCW 82.08.980 or 82.12.980 and used by a manufacturer engaged in the manufacturing of superefficient airplanes, as defined in RCW 82.32.550, are exempt from tax under this chapter. A person claiming the credit under RCW 82.04.4463 is not eligible for the exemption under this section.
(2) In addition to all other requirements under this title, a person claiming the exemption under this section must file a complete annual tax performance report with the department under RCW 82.32.534.
(3) This section expires July 1, 2040.