"We could not justify an in-house aircraft operation," a G.M. spokesman, Tom Wilkinson, said.
Coatings designed for use on the exterior surfaces of cars, road signs, houses, aircraft, and commercial buildings are especially at risk of degradation induced by sunlight.
These include activities where visibility is important for large audiences (auditoriums and covered stadiums), where flexibility is important (exhibition halls and certain types of manufacturing facility), and where large movable objects are housed (aircraft hangars).
In the past, Grassley and other lawmakers have taken issue with ARC's use of money, including whether it improperly housed aircraft owned by Google at NASA facilities.
The planes will be built by Lockheed Martin in Texas and the price tag includes weapons, maintenance and the upgrading of facilities in Australia to house the aircraft.
They get there whenever they can, although they also have a Norwegian tree house, an aircraft carrier-cum-houseboat, and a working oryx ranch, so they have little free time.
Nacelles house the aircraft engine, and its components include thrust reversers, cowls, nozzles and exhaust systems.
A £2m proposal by the Save Concorde Group to house the aircraft was rejected by British Airways last year.
The Aeronautica attraction, based at the docks, would house historic aircraft and ships linked to the city.
The Bristol Aero Collection Trust is in the process of raising £13m to build an aviation museum on the site which will house the aircraft.
