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.

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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.