An unusual mishap on the Deeside line is described by Mr. C. J. Bowller. He writes that as the Class "B12" 4-6-0 No.1552 was entering Banchory Station on August 27, one of the smokeplates of the footbridge became detached, and struck the boiler of the engine, damaging the safety valves, and the roof of the cab.
Source: wiktionary