What happens if proper RAIM sensitivity is not available?

If proper RAIM sensitivity is not available, manually resetting the sensitivity to 0.3 NM will not automatically change the RAIM sensitivity on some receivers. This means that even if a user attempts to adjust settings to improve navigation accuracy or integrity, the receiver may not respond to those inputs as expected, resulting in retained sensitivity settings that could hinder proper navigation. Ensuring correct RAIM sensitivity is crucial for reliable navigation; otherwise, pilots may not receive accurate alerts regarding system integrity, impacting decision-making during flight operations.

This context highlights the importance of understanding how RAIM functions in navigation systems, especially when addressing potential failures or limitations in the received data.