The Vienna Test System for pilots, explained

The Vienna Test System is made by Schuhfried, an Austrian company, and was first released in the 1980s; it is now used for millions of tests a year across many fields, not only aviation. For pilot and aeromedical work, Schuhfried assembles an aviation test set covering resilience, memory, spatial ability, sustained attention, sensorimotor coordination, reaction time and decision-making under pressure.

Individual VTS modules that Schuhfried documents include the Cognitrone (COG) attention test, the Visual Pursuit Test (LVT), Two-Hand Coordination (2HAND), Signal Detection (SIGNAL) for sustained vigilance, the Determination Test (DT) for reaction under a heavy multi-signal load, and a simultaneous-capacity multitasking test (SIMKAP). Rather than one fixed exam, an operator configures the battery from these modules for its own requirement.

VTS appears most in aeromedical and ab-initio pilot selection rather than as one airline's branded test. Schuhfried's own case studies describe the Aviation Medical Center in the Netherlands, which runs EASA and FAA compliant examinations, using VTS to assess stress tolerance, coordination and multitasking, and the Arctic University of Norway using Schuhfried test sets to screen ab-initio pilot applicants down to its intake. Several national air forces also use it.

So if you are booked for a Class 1 medical or an ab-initio programme in continental Europe, a VTS session is a realistic possibility. Specific commercial airlines rarely confirm using it by name, so do not assume from another operator's example.