Narrative:

On departure out of msp, we were deviating for thunderstorms in area. Received altitude change from FL230 back to FL190. Had failed to set 29.92 in at FL180. Upon leveling at FL190, center advised us altitude 300 ft off. We reset altimeter and immediately corrected back to FL190.

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Original NASA ASRS Text

Title: A B727 FLT IS OFF ITS ASSIGNED ALT AT LEVELOFF WHEN THE CREW HAD NOT SET THE ALTIMETER TO 29 PT 92 CLBING OUT OF FL180, 50 MI E OF MSP, MN.

Narrative: ON DEP OUT OF MSP, WE WERE DEVIATING FOR TSTMS IN AREA. RECEIVED ALT CHANGE FROM FL230 BACK TO FL190. HAD FAILED TO SET 29.92 IN AT FL180. UPON LEVELING AT FL190, CTR ADVISED US ALT 300 FT OFF. WE RESET ALTIMETER AND IMMEDIATELY CORRECTED BACK TO FL190.

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.