Signalling fault caused Dalwhinnie HST derailment
THE derailment of a Scotrail HST set at Dalwhinnie in the early hours of April 10 was caused by a signalling fault, an RAIB statement concludes.
The five-car set, known as HA19, was being operated as an overnight test train between Perth and Tomatin, using power cars Nos. 43012 and 43015 to check stepping distances, so there were no passengers on board; just five crew, who were uninjured.