See the Warning, Caution, and Advisory sections in Appendix A for abnormal GPS condition annunciations. GPS navigation will resume automatically once a valid GPS solution is restored.

Up to two external GPS sources may be configured, along with the internal VFR GPS. Each GPS must be configured and operational during the last on-ground start to be available for use. The following table provides information on what GPS source will be used in the event of one or more GPS failure.