What should a pilot do upon receiving a RAIM error while flying the RNAV(GPS) RWY 30 approach to LBF?

When a pilot receives a RAIM (Receiver Autonomous Integrity Monitoring) error while flying the RNAV(GPS) approach, it indicates that there may be a problem with the integrity of the GPS signal being received. This is a critical situation that requires the pilot to take appropriate action to ensure the safety of the flight.

The correct course of action involves continuing to the missed approach point while climbing to a safe altitude, which in this case is 4,900 feet. This allows the pilot to maintain an appropriate safety margin above the terrain and obstacles in the vicinity, while also preparing to execute the missed approach procedure if the approach cannot be completed safely.

Climbing to a predetermined altitude rather than making abrupt altitude changes is vital, as it allows time to reassess the situation and prepares the aircraft for a safe alternate procedure while minimizing the risk of controlled flight into terrain.

The choice of simply continuing to the missed approach point while climbing provides an opportunity to evaluate the situation further before executing a missed approach, ensuring the pilot remains compliant with safety protocols. This response balances the need for altitude safety with the operational requirements of the approach, aligning well with standard aviation practices during GPS approach anomalies.