GE Aerospace, whose joint venture made the engines of the Boeing airplane that crashed in the deadliest aviation disaster on South Korean soil, joined the investigation as Seoul extended by a week special inspections of all 101 Boeing 737-800 jets.

South Korean investigators said Friday they expected to find more human remains as they began lifting the wreckage of the Jeju Air jet that crashed on landing last weekend killing all but two of the 181 passengers and crew aboard.

South Korean investigators said Saturday they were close to finalizing the transcript of the cockpit voice recorder from a fatal plane crash that left 179 people dead last week. The recording may hold clues to the final moments of Jeju Air flight 2216,