Class 58 - Railfreight - 58040 - DCC Sound Fitted58040 was released to traffic on 16th March 1986. This locomotive is typical of the second batch of 15 Class 58s and has many differences from the earlier 35. The engine room doors were now fitted with proper handles, cab ventilation had been improved with the fitting of cab side vents, and the tall cab access handrails had changed to a full height version. Underneath, the bogies had been revised to a new design: the CP3A type with external sandboxes.