Narrative:

The copilot was flying the departure route by hand (autoplt off). As we approached our assigned altitude of 10000 ft, we were told of descending traffic (from 13000 ft to 12000 ft) crossing our flight path. Our rate of climb was high (about 3000 FPM) as we called 'out of 9000 ft for 10000 ft.' I spotted the traffic and was also watching the altimeter as we approached 10000 ft. I saw the altitude shoot past 10000 ft and I called '10000 ft.' the copilot reacted, but because of the high rate of climb, our altitude reached 10400 ft before the copilot brought the plane back down to 10000 ft. The copilot explained that the reason for the overshoot was that she looked up just at the moment of departure's traffic call and was distracted from her altitude monitoring. This caused the overshoot. A better operation would have been to go to the autoplt if not closely monitoring the altitude.

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Original NASA ASRS Text

Title: ALTDEV CAUSED BY PF LOOKING OUTSIDE FOR TFC JUST ABOUT LEVELOFF TIME.

Narrative: THE COPLT WAS FLYING THE DEP RTE BY HAND (AUTOPLT OFF). AS WE APCHED OUR ASSIGNED ALT OF 10000 FT, WE WERE TOLD OF DSNDING TFC (FROM 13000 FT TO 12000 FT) XING OUR FLT PATH. OUR RATE OF CLB WAS HIGH (ABOUT 3000 FPM) AS WE CALLED 'OUT OF 9000 FT FOR 10000 FT.' I SPOTTED THE TFC AND WAS ALSO WATCHING THE ALTIMETER AS WE APCHED 10000 FT. I SAW THE ALT SHOOT PAST 10000 FT AND I CALLED '10000 FT.' THE COPLT REACTED, BUT BECAUSE OF THE HIGH RATE OF CLB, OUR ALT REACHED 10400 FT BEFORE THE COPLT BROUGHT THE PLANE BACK DOWN TO 10000 FT. THE COPLT EXPLAINED THAT THE REASON FOR THE OVERSHOOT WAS THAT SHE LOOKED UP JUST AT THE MOMENT OF DEP'S TFC CALL AND WAS DISTRACTED FROM HER ALT MONITORING. THIS CAUSED THE OVERSHOOT. A BETTER OP WOULD HAVE BEEN TO GO TO THE AUTOPLT IF NOT CLOSELY MONITORING THE ALT.

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.