Which references prohibit using the FMS as a sole navigation source for instrument approaches?

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Multiple Choice

Which references prohibit using the FMS as a sole navigation source for instrument approaches?

Not relying on the FMS as the only navigation source for instrument approaches is restricted by certain FAA publications. Advisory circulars provide guidance on how navigation systems should be used, stressing that pilots must cross-check FMS data with primary navigation sources and be aware of limitations in onboard navigation. The aircraft’s limitations published in the AFM further prohibit using the FMS as the sole source for an approach, ensuring there’s redundancy and verification from other navigation data. FAA Order 7110.65 deals with ATC procedures and doesn’t establish cockpit navigation-source restrictions, so it isn’t the controlling reference for this issue. Taken together, the advisory circulars and AFM limitations cover the prohibition, making them the correct references.

Not relying on the FMS as the only navigation source for instrument approaches is restricted by certain FAA publications. Advisory circulars provide guidance on how navigation systems should be used, stressing that pilots must cross-check FMS data with primary navigation sources and be aware of limitations in onboard navigation. The aircraft’s limitations published in the AFM further prohibit using the FMS as the sole source for an approach, ensuring there’s redundancy and verification from other navigation data. FAA Order 7110.65 deals with ATC procedures and doesn’t establish cockpit navigation-source restrictions, so it isn’t the controlling reference for this issue. Taken together, the advisory circulars and AFM limitations cover the prohibition, making them the correct references.

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