The Iowa Transportation Commission this week approved the state’s new aviation plan that includes grants for airport improvements in Des Moines, Ankeny, Newton and Grinnell. Ankeny will receive $236,250 for a $525,000 apron grading and paving project. Des Moines will get $128,800 for a $184,000 road project for the general aviation area. Grinnell is in line for $260,000 for a $325,000 fuel system project. And Newton was awarded $296,000 for its $370,000 fuel system relocation project. The money comes from aircraft registration and fuel fees.