For many years FireSpy bus analyzers have become the standard for AS5643 bus analysis. They support AS5643 protocol decoding, timing analysis and many more useful features. FireSpys are used throughout all phases of a program life cycle since they are truly multi-featured and multi-purpose tools! FireSpys are used during the early technology evaluation phase (traffic generation, bandwidth-utilization analysis, topology and protocol simulation, ...), system design (topology analysis, verification of TX time mapping, channel mapping, ASM packet structure, ...), system development (traffic analysis, response analysis, verification of the redundancy concept, error injection, ...), production (device verification, vendor device test and acceptance, (sub)-system performance tests, ...), aircraft check out (aircraft performance validation, ...), in-field system test (failure analysis, ...). FireSpys are available in single, triple and even in nine-bus configurations in order to address the monitoring of individual, triple or the entire nine-bus architecture of typical avionics systems with triple redundancy.