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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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The ARTCC radar controller indicated to the flight crew of an mdt that their altitude was not indicating as assigned. The flight crew switched to the other transponder and then the controller received the correct altitude readout.
| Attributes | |
| ACN | 331120 |
| Time | |
| Date | 199603 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : isp |
| State Reference | NY |
| Altitude | msl bound lower : 5000 msl bound upper : 5000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | artcc : zny |
| Operator | general aviation : corporate |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 150 flight time total : 14000 flight time type : 200 |
| ASRS Report | 331120 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : less severe |
| Independent Detector | other controllera |
| Resolutory Action | flight crew : overcame equipment problem other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
Controller indicated we were not at assigned altitude of 5000 ft which we were. We switched mode C transponder to #2 backup and then got correct altitude readout.
Original NASA ASRS Text
Title: THE ARTCC RADAR CTLR INDICATED TO THE FLC OF AN MDT THAT THEIR ALT WAS NOT INDICATING AS ASSIGNED. THE FLC SWITCHED TO THE OTHER XPONDER AND THEN THE CTLR RECEIVED THE CORRECT ALT READOUT.
Narrative: CTLR INDICATED WE WERE NOT AT ASSIGNED ALT OF 5000 FT WHICH WE WERE. WE SWITCHED MODE C XPONDER TO #2 BACKUP AND THEN GOT CORRECT ALT READOUT.
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.