Narrative:

While being handed off from approach to tower; passenger advised crew that he wanted to go to a nearby airport instead of the filed airport. Crew advised approach of airport change; approach told crew to request change with tower. Tower instructed crew to maintain 8;000 ft overfly the runway and expect a right turn and was told to contact approach; that the crew complied with. Approach vector aircraft to new destination for the visual approach to runway 35R. The crew loaded the ILS 35R approach into the collins FMS to back up the visual approach to runway 35R. The inbound heading was 280 that was inside of the final approach fix; 2 miles before the FAF crew advised approach that the airport was insight. Crew was given a clear for a visual approach to runway 35R and to contact tower who gave a clear to land. Crew armed the approach mode to intercept the final course and the autopilot began a turn to final 1 mile inside of the final course; because the auto-tune will not turn properly if the vector is inside of the final approach fix. After the aircraft rolled wings level; the crew disengaged the autopilot; made a turn back to the final; head 260 and made a sloe in tight approach to runway 35R and landed without incident. The collins FMS-3000 flight management box needs a vector of 2 miles outside of the final auto-tune and to properly activate. It was still locked onto the original destination's 35R ILS. The morning light and rough ride with a 2;000 ft thin scatter layer also contributed to this incident.

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Original NASA ASRS Text

Title: A C525 crew reported a track deviation during approach after a destination change to a nearby airport with the same final approach heading. A FMS design issue failed to reprogram the new approach inside the final approach fix.

Narrative: While being handed off from Approach to Tower; passenger advised crew that he wanted to go to a nearby airport instead of the filed airport. Crew advised approach of airport change; approach told crew to request change with Tower. Tower instructed crew to maintain 8;000 FT overfly the runway and expect a right turn and was told to contact Approach; that the crew complied with. Approach vector aircraft to new destination for the visual approach to Runway 35R. The crew loaded the ILS 35R approach into the Collins FMS to back up the visual approach to Runway 35R. The inbound heading was 280 that was inside of the final approach fix; 2 miles before the FAF crew advised Approach that the airport was insight. Crew was given a clear for a visual approach to Runway 35R and to contact Tower who gave a clear to land. Crew armed the approach mode to intercept the final course and the autopilot began a turn to final 1 mile inside of the final course; because the auto-tune will not turn properly if the vector is inside of the final approach fix. After the aircraft rolled wings level; the crew disengaged the autopilot; made a turn back to the final; head 260 and made a sloe in tight approach to Runway 35R and landed without incident. The Collins FMS-3000 flight management box needs a vector of 2 miles outside of the final auto-tune and to properly activate. It was still locked onto the original destination's 35R ILS. The morning light and rough ride with a 2;000 FT thin scatter layer also contributed to this incident.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.