The investigation into a Jeju Air crash in South Korea has found both engines on the plane sustained bird strikes but the pilots turned off a less-damaged one just before its crash-landing.

South Korean investigators have uncovered substantial evidence indicating that pilots of the Jeju Air flight that crashed in December mistakenly shut down the less-damaged engine following a bird strike,

The source said the evidence, including the cockpit voice recorder, computer data and a physical engine switch found in the wreckage showed pilots shut off the left engine instead of the right engine when taking emergency steps after a bird strike just before it was scheduled to land.