What altitude alerting system is required for RVSM compliance?

An altitude alerting system with visual and audio signals is essential for Reduced Vertical Separation Minimum (RVSM) compliance, as it helps to ensure that aircraft maintain their assigned altitudes accurately. The system provides pilot notifications when the aircraft deviates from the assigned altitude, which is critical in maintaining safe vertical separation from other aircraft operating at similar altitudes within RVSM airspace.

The visual signals typically include cockpit displays indicating current and assigned altitudes, while audio alerts notify pilots if there is a deviation. This dual modality enhances situational awareness and allows for immediate corrective action. Compliance with RVSM regulations is fundamental for safe operations in crowded airspace, and effective altitude alerting is a key component of maintaining that safety.

Other systems like transponders, basic alarm systems, or automatic altitude control systems do not fulfill the specific requirements set forth for RVSM compliance, which emphasizes the need for proactive altitude monitoring and alerting.