A K-Mile Asia Boeing 737-400, registration HS-KMC performing freight flight 8K-804 from Bangkok (Thailand) to Singapore (Singapore), landed on Singapore's runway 20R when after touchdown unusual vibrations occurred and the aircraft pulled to the left. The crew managed to correct and steer the aircraft back onto the center line. After roll out the crew taxied the aircraft to the apron.
A post flight examination revealed the right main gear upper torsion link was fractured. The main gear damper manifold was recovered from the taxiway along the taxi route to the parking bay.
Singapore's Transportation Safety Investigation Board (TSIB) rated the occurrence a serious incident and announced, via an interim statement of Jun 5th 2020, that an investigation was opened. A draft final report is currently being prepared.