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2 radar system at ord are having problems with track jumping and coasting.
| Attributes | |
| ACN | 225354 |
| Time | |
| Date | 199211 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : ord |
| State Reference | IL |
| Altitude | msl bound lower : 3000 msl bound upper : 5000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : ord |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | descent : approach |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 10 |
| ASRS Report | 225354 |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | none taken : unable |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Navigational Facility |
| Air Traffic Incident | other |
| Situations | |
| Navigational Aid | Unspecified |
Narrative:
On nov/xx/92, we went from ASR-9 at ord to ASR-7 to conduct simultaneous ILS 27 approachs. The ASR-9 is unusable on this confign due to track jumping outside 10 mi on final. However, the ASR-7 is much worse due to continuous coasting and tracking problems. Especially between the ord 360 degree and 090 degree radials. Aircraft on base from the northeast are constantly coasting, causing an unsafe situation.
Original NASA ASRS Text
Title: 2 RADAR SYS AT ORD ARE HAVING PROBLEMS WITH TRACK JUMPING AND COASTING.
Narrative: ON NOV/XX/92, WE WENT FROM ASR-9 AT ORD TO ASR-7 TO CONDUCT SIMULTANEOUS ILS 27 APCHS. THE ASR-9 IS UNUSABLE ON THIS CONFIGN DUE TO TRACK JUMPING OUTSIDE 10 MI ON FINAL. HOWEVER, THE ASR-7 IS MUCH WORSE DUE TO CONTINUOUS COASTING AND TRACKING PROBLEMS. ESPECIALLY BTWN THE ORD 360 DEG AND 090 DEG RADIALS. ACFT ON BASE FROM THE NE ARE CONSTANTLY COASTING, CAUSING AN UNSAFE SITUATION.
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.