Narrative:

Missed leveloff at FL210 and stopped climb at 21400 ft. Descended back down to FL210.

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Original NASA ASRS Text

Title: FO OF A B727 OVERSHOT ASSIGNED ALT ON CLB AND CORRECTED WHEN MISTAKE WAS DISCOVERED. NO APPARENT CONFLICT OR ATC INTERVENTION.

Narrative: MISSED LEVELOFF AT FL210 AND STOPPED CLB AT 21400 FT. DSNDED BACK DOWN TO FL210.

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.