What altitude alerting system is required for RVSM compliance?

For Reduced Vertical Separation Minimum (RVSM) compliance, the required altitude alerting system is one that provides both visual and audio signals. This ensures that pilots are continuously aware of their altitude and can respond promptly in case of any deviation from the desired altitude. The combination of visual and audio alerts enhances safety by providing redundant cues, which is critical in an environment where aircraft are flying at closer vertical separations.

While basic alarm systems or a single mode A transponder may offer some level of altitude awareness, they do not meet the stringent requirements set for RVSM operations. An automatic altitude control system is important for maintaining altitude during flight, but it does not provide the alerting functions necessary for compliance with RVSM regulations. Thus, having a sophisticated altitude alerting system with both visual and audio signals is essential for ensuring the safety and proper altitude management that RVSM demands.