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Controller could not see military aircraft's transponder for approximately 15 mi. Claims that radar is bad.
| Attributes | |
| ACN | 224198 |
| Time | |
| Date | 199210 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : slc |
| State Reference | UT |
| Altitude | msl bound lower : 6000 msl bound upper : 15000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : slc |
| Operator | other |
| Make Model Name | Experimental |
| Flight Phase | descent other |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller military : 8 controller radar : 12 |
| ASRS Report | 224198 |
| Person 2 | |
| Affiliation | government : military |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : military |
| 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:
Mlt X, a spc was inbound to hill AFB. Mlt X was level at 15000 and I lost his beacon target. He was given a descent to 6300 and cleared for a visual approach. I did not start seeing his transponder until the slc 333/30. This was almost 15 mi without beacon information. I called ZLC and they were still seeing mlt X's transponder.
Original NASA ASRS Text
Title: CTLR COULD NOT SEE MIL ACFT'S TRANSPONDER FOR APPROX 15 MI. CLAIMS THAT RADAR IS BAD.
Narrative: MLT X, A SPC WAS INBOUND TO HILL AFB. MLT X WAS LEVEL AT 15000 AND I LOST HIS BEACON TARGET. HE WAS GIVEN A DSCNT TO 6300 AND CLRED FOR A VISUAL APCH. I DID NOT START SEEING HIS TRANSPONDER UNTIL THE SLC 333/30. THIS WAS ALMOST 15 MI WITHOUT BEACON INFO. I CALLED ZLC AND THEY WERE STILL SEEING MLT X'S TRANSPONDER.
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.