The abbreviation VECB denotes a universal engine control system for auxiliary power units. It controls and monitors the auxiliary power units in the aircraft of the Airbus A320 family and the A330/A340 family. The VECB is a versatile system, meaning that the same unit can control different types of single engine families without substantial modifications. Furthermore, the VECB is equipped with an overspeed protection mechanism, which protects the engine against fatal damages in case of failure. A key advantage of this system is that modifications can be made to other engines with a minimum of effort. Diehl Aerospace is system supplier for the VECB.