Complex sentence: The aircraft involved in the accident was eventually returned to service with a replacement right wing salvaged from Air Canada Flight 797 that had been destroyed by fire after an emergency landing at Cincinnati/Northern Kentucky International Airport earlier that year.
Split into simpler sentences: The aircraft involved in the accident was eventually returned to service. A replacement for the right wing was attached to it, salvaged from Air Canada Flight 797 that was destroyed by fire after an emergency landing at Cincinnati/Northern Kentucky International Airport earlier that year.