On 21 April 2016, a Fokker F50 under radar control in Class ‘E’ airspace was almost in collision with a VFR Piper PA28 after they closed on a constant relative bearing when inbound to Friedrichshafen in VMC. After only being able to locate the PA28 on their TCAS display, the F50 crew implemented a lateral avoidance manoeuvre which prevented generation of an RA. The Investigation concluded that special ATC procedures in place due to busy traffic because of an annually-held trade fair at Friedrichshafen had entailed “systemic risk and also identified inadequate controller coordination as contributory to a near collision.