What is the main limitation of the RNAV system?

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Multiple Choice

What is the main limitation of the RNAV system?

Explanation:
RNAV navigation depends on receiving navigation signals to determine your position and guide you along waypoints. The most fundamental limitation is signal reception availability—the reception volume. If you’re outside the area where signals are available or if the signals are degraded by terrain, atmosphere, or interference, RNAV can’t determine your position accurately or provide reliable guidance. In those situations you’d need alternative navigation methods or procedures. While factors like power supply, cost/complexity, and slight signal latency matter in practice, they don’t define RNAV’s basic capability the way signal reception and coverage do.

RNAV navigation depends on receiving navigation signals to determine your position and guide you along waypoints. The most fundamental limitation is signal reception availability—the reception volume. If you’re outside the area where signals are available or if the signals are degraded by terrain, atmosphere, or interference, RNAV can’t determine your position accurately or provide reliable guidance. In those situations you’d need alternative navigation methods or procedures. While factors like power supply, cost/complexity, and slight signal latency matter in practice, they don’t define RNAV’s basic capability the way signal reception and coverage do.

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