Complex sentence: He is also a survivor of the crash-landing of United Airlines flight 232 on July 19,1989; after escaping he returned to the wreckage to rescue an 11 month old baby.
Split into simpler sentences: He is also a survivor of the crash-landing of United Airlines flight 232 on July 19,1989. Not only did he survive, he returned to the wreckage and rescued an 11 month old baby.