Narrative:

Assigned altitude was 13000 ft. Current qnh was 29.58. First officer's altimeter was still at 29.92. Aircraft descended to 12700 ft. First officer was hand flying.

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Original NASA ASRS Text

Title: AN ALT OVERSHOOT ATTRIBUTED TO INCORRECT SETTING OF THE ALTIMETER.

Narrative: ASSIGNED ALT WAS 13000 FT. CURRENT QNH WAS 29.58. FO'S ALTIMETER WAS STILL AT 29.92. ACFT DSNDED TO 12700 FT. FO WAS HAND FLYING.

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.