Complex sentence: As of February 2012, the Air Finland fleet consists of four Boeing 757-200 aircraft with an average age of 17.6 years, they provide space for 219-235 passengers in an all-economy class cabin layout.
Split into simpler sentences: As of February 2012, the Air Finland fleet consisted of four Boeing 757-200 aircraft with an average age of 17.6 years. They provided space for 219-235 passengers in an all-economy class cabin layout.