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Medium large transport mode C data tag altitude jump. Radar equipment problem ARTS IIIA mode C display.
| Attributes | |
| ACN | 227657 |
| Time | |
| Date | 199212 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : tpa |
| State Reference | FL |
| Altitude | msl bound lower : 2000 msl bound upper : 2000 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : tpa artcc : vhhk |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 11 |
| ASRS Report | 227657 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | none taken : unable |
| Consequence | faa : investigated |
| Supplementary | |
| Primary Problem | Navigational Facility |
| Air Traffic Incident | other |
| Situations | |
| Navigational Aid | Unspecified |
Narrative:
Medium large transport was at 2000 ft on final approach and 'ARTS' readout jumped to 11700 ft. This is a continuous problem we are having at tampa. It gets very scary because you don't know what to believe or ignore and will probably at some point in time give someone a heart attack who might think that they lost track of an aircraft.
Original NASA ASRS Text
Title: MLG MODE C DATA TAG ALT JUMP. RADAR EQUIP PROBLEM ARTS IIIA MODE C DISPLAY.
Narrative: MLG WAS AT 2000 FT ON FINAL APCH AND 'ARTS' READOUT JUMPED TO 11700 FT. THIS IS A CONTINUOUS PROBLEM WE ARE HAVING AT TAMPA. IT GETS VERY SCARY BECAUSE YOU DON'T KNOW WHAT TO BELIEVE OR IGNORE AND WILL PROBABLY AT SOME POINT IN TIME GIVE SOMEONE A HEART ATTACK WHO MIGHT THINK THAT THEY LOST TRACK OF AN ACFT.
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.