On 23 October 2022, the Airbus A330-300 operating this flight overran the runway while landing in Cebu due to a failure with the hydraulics system.

Visibility was 8,000 metres (8.0 km; 5.0 mi) at the time of the accident, with thunderstorms and rain in the area; there were no reports of lightning.

[6] Other planes decided to divert due to weather prior to KE631's landing attempts, but there is no information on the time span between the other diversions and the Korean Air flight.

[12] News reports noted the similarities to previous crashes on Korean Air that were caused by pilot error and the airline's historic safety culture.

[20] On 25 October 2022, it was reported that the captain of the flight provided testimony that they suffered a hard touchdown on their second approach due to wind shear forcing them down.

[21] On 23 October 2023, CAAP released the first interim statement, stating that the draft investigation report was in its final stage of preparation.

[22] On 22 October 2024, CAAP released the second interim statement, stating that the draft final report had been sent to all concerned Accredited Representatives.