Complex sentence: The city of Muskogee decided to close the field to the public following a two-fatality crash in 1998, however limited aviation use was allowed until 2000 by a private firm which refurbished military-surplus Beechcraft U- 21 Utes.
Split into simpler sentences: The city of Muskogee decided to close the field to the public following a two-fatality crash in 1998. Limited aviation use was allowed until 2000, however, by a private firm that refurbished military-surplus Beechcraft U- 21 Utes.