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An untracked, unidented air carrier is noted within the controller reporter's area. A mode C intruder.
| Attributes | |
| ACN | 429994 |
| Time | |
| Date | 199903 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : cmi |
| State Reference | MO |
| Altitude | msl bound lower : 35000 msl bound upper : 35000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : ptk |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Experience | controller radar : 17 |
| ASRS Report | 429994 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : flight data |
| Events | |
| Anomaly | non adherence : published procedure other anomaly other other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | other other |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | Operational Deviation Inter Facility Coordination Failure |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
Narrative:
Aircraft was untracked, unidented at FL350. I observed the limited data, a mode C intruder inside ZKC airspace, then took the steps to have the aircraft idented. The only way this is discovered is if the controller working a given position notices the mode C intruder in or around his/her airspace. The constantly increasing traffic loads often does not allow the controller to constantly scan for unknown traffic. This is a very rare occurrence, and is not taught or mentioned at any time. I would encourage training or some type of notice being published which makes the controller aware of the possibility of a mode C intruder incident.
Original NASA ASRS Text
Title: AN UNTRACKED, UNIDENTED ACR IS NOTED WITHIN THE CTLR RPTR'S AREA. A MODE C INTRUDER.
Narrative: ACFT WAS UNTRACKED, UNIDENTED AT FL350. I OBSERVED THE LIMITED DATA, A MODE C INTRUDER INSIDE ZKC AIRSPACE, THEN TOOK THE STEPS TO HAVE THE ACFT IDENTED. THE ONLY WAY THIS IS DISCOVERED IS IF THE CTLR WORKING A GIVEN POS NOTICES THE MODE C INTRUDER IN OR AROUND HIS/HER AIRSPACE. THE CONSTANTLY INCREASING TFC LOADS OFTEN DOES NOT ALLOW THE CTLR TO CONSTANTLY SCAN FOR UNKNOWN TFC. THIS IS A VERY RARE OCCURRENCE, AND IS NOT TAUGHT OR MENTIONED AT ANY TIME. I WOULD ENCOURAGE TRAINING OR SOME TYPE OF NOTICE BEING PUBLISHED WHICH MAKES THE CTLR AWARE OF THE POSSIBILITY OF A MODE C INTRUDER INCIDENT.
Data retrieved from NASA's ASRS site as of July 2007 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.