MDS Aero Test has started cold-weather testing the biggest engine the GLACIER facility in Thompson, has seen.

A giant Rolls Royce XWB arrived in the City a few weeks ago, and will be tested to see how it copes with frozen rain by being constantly sprayed with icy water.

The massive state-of-the-art engine is around 20 feet in diameter and powers jumbo passenger jets.

The GLACIER facility is a popular cold weather testing facility for engines due to the sub-arctic temperatures seen in the area.