Complex sentence: The aircraft was a twin-engined MD-83, registered in Nigeria as 5N-RAM has been previously flown by Alaska Airlines (N944AS) built in 1990 and acquired by Dana Air in February 2009.
Split into simpler sentences: The aircraft was a twin-engined MD-83, registered in Nigeria as 5N-RAM. It was a former Alaska Airlines aircraft (N944AS) built in 1990 and acquired by Dana Air in February 2009.