<Table> <Tr> <Th_colspan="2"> The Greatest American Hero </Th> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Genre </Th> <Td> Comedy - drama </Td> </Tr> <Tr> <Th> Created by </Th> <Td> Stephen J. Cannell </Td> </Tr> <Tr> <Th> Starring </Th> <Td> William Katt Robert Culp Connie Sellecca Michael Paré Faye Grant </Td> </Tr> <Tr> <Th> Theme music composer </Th> <Td> Mike Post Stephen Geyer </Td> </Tr> <Tr> <Th> Opening theme </Th> <Td> "Theme from Greatest American Hero (Believe It or Not)" Performed by Joey Scarbury </Td> </Tr> <Tr> <Th> Composer (s) </Th> <Td> Mike Post </Td> </Tr> <Tr> <Th> Country of origin </Th> <Td> United States </Td> </Tr> <Tr> <Th> Original language (s) </Th> <Td> English </Td> </Tr> <Tr> <Th> No. of seasons </Th> <Td> </Td> </Tr> <Tr> <Th> No. of episodes </Th> <Td> 45 (5 unaired) (list of episodes) </Td> </Tr> <Tr> <Th_colspan="2"> Production </Th> </Tr> <Tr> <Th> Running time </Th> <Td> 60 minutes </Td> </Tr> <Tr> <Th_colspan="2"> Release </Th> </Tr> <Tr> <Th> Original network </Th> <Td> ABC </Td> </Tr> <Tr> <Th> Original release </Th> <Td> March 18, 1981 (1981 - 03 - 18)--February 3, 1983 (1983 - 02 - 03) </Td> </Tr> </Table> <Tr> <Th_colspan="2"> The Greatest American Hero </Th> </Tr>

When did the greatest american hero air on tv