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Garmin GNS400 and GNS500 CDI Issue

October 17, 2013

The course deviation indicator (CDI) may deflect in the wrong direction (away from the desired track) while making a course change between two intersecting legs of an active flight plan. This issue is most likely to occur if the aircraft deviates excessively from the desired track (DTK) during a planned course change. Pilots should monitor CDI guidance during flight plan course changes, especially when maintaining a large cross track error. Also, be aware that an autopilot armed for NAV capture during this condition will command the aircraft to follow the incorrect CDI guidance. If this condition occurs, maintain positive control of the aircraft and manually activate the appropriate flight plan leg to establish the correct CDI deflection. This issue will be fixed in a future software release.

For More Information:


Nelson "Dan" Daniel
Voice: 877-227-9142 Ext 272
Fax: 334-953-1668

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