Narrative:

Departure from dfw, first officer flying, cleared to climb to FL200 while deviating for WX. First officer inadvertently climbed to 20300 ft before returning to FL200. ATC did not call about deviation and no TCASII alerts.

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Original NASA ASRS Text

Title: ALTDEV ALT OVERSHOT IN CLB.

Narrative: DEP FROM DFW, FO FLYING, CLRED TO CLB TO FL200 WHILE DEVIATING FOR WX. FO INADVERTENTLY CLBED TO 20300 FT BEFORE RETURNING TO FL200. ATC DID NOT CALL ABOUT DEV AND NO TCASII ALERTS.

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.