Sequence of Events
The captain reported that upon landing, after lowering the nosewheel and applying reverse thrust, he noticed an unusual quietness. As the airplane decelerated to taxi speed, the nose began to veer to the right. Despite the captain's steering inputs, the turn continued, and the airplane started to slide. It eventually came to a stop near the runway edge, 70 degrees from the runway heading. Subsequently, the captain realized that the engines were not operating.
A witness observed the airplane being "engulfed in a cloud of snow" as it landed, and described hearing a sound like it "lost intake air, then became silent."
Weather and Runway Conditions
The reported weather included a 600-foot ceiling, visibility of 3/8 mile in snow and fog, and surface winds from 360 degrees at 16 knots gusting to 27 knots. The control tower reported 1/4 inch of snow on the runway with braking action assessed as fair to poor. A witness, however, reported slush accumulations on the runway greater than 1/4 inch.
Engine Manufacturer Statement
The engine manufacturer stated that there is a potential for engine flameout if 1/4 inch of slush or more is ingested when the engines are at low power, such as during landing.