Narrative:

We just got clearance to descend from 21000 ft to 20000 ft. The first officer was flying. I began the farewell PA to passenger. We descended to 19600 ft then corrected to 20000 ft. Next time I'll do all PA's at cruise to pay more attention to flying.

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Original NASA ASRS Text

Title: MLG ACFT DURING DSCNT OVERSHOT ASSIGNED ALT BY 400 FT. RPTR CAPT WAS MAKING A PA AND DISTRACTED.

Narrative: WE JUST GOT CLRNC TO DSND FROM 21000 FT TO 20000 FT. THE FO WAS FLYING. I BEGAN THE FAREWELL PA TO PAX. WE DSNDED TO 19600 FT THEN CORRECTED TO 20000 FT. NEXT TIME I'LL DO ALL PA'S AT CRUISE TO PAY MORE ATTN TO 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.