Question

What should be done if the RAIM flag /status annunciation appears in IMC conditions after the Final Approach Waypoint (FAWP)? A) Continue the approach and rely on other navigation aids. B) Initiate a missed approach and follow published procedures. C) Proceed with the approach but increase the descent rate. D) Divert to an alternate airport.

Answer 1

If the RAIM flag appears after the FAWP in IMC conditions, the correct procedure is to Initiate a missed approach and follow published procedures, ensuring the safety of the flight.

Step-by-step explanation:

The subject of this question is aircraft navigation systems, specifically the Receiver Autonomous Integrity Monitoring (RAIM) system used in GPS. When flying in Instrument Meteorological Conditions (IMC), visual references are not available and reliance on navigation instruments becomes crucial. If the RAIM flag or status annunciation appears after the Final Approach Waypoint (FAWP), this indicates that the GPS has detected a potential issue and cannot guarantee the integrity of the navigation solution.

According to aviation standards and safety protocols, the correct response to this situation is option B) Initiate a missed approach and follow published procedures. This is because, when the RAIM flag appears after the FAWP, it's not guaranteed that other navigation aids would provide an adequate solution and safety could be compromised.

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