Shaheen Air International (SAI) Flight NL 151, Boeing 737-400 aircraft Reg. No. AP-BJT was operating a routine passenger flight from Islamabad to Quetta on 16ᵗʰ July, 2015. The flight remained uneventful till landing at 0547 UTC (day light conditions). Approximately 2-3 seconds after touchdown, the cockpit crew experienced vibrations which increased in intensity. The directional control was maintained through rudder and aircraft was stopped on the runway. On post flight inspection, Left Main Landing Gear (LMLG) Upper Torsion Link was found broken.