Narrative:

Original clearance altitude was 5000 ft. Was amended during takeoff clearance to 4000 ft. We were cleared for takeoff, following the departure procedure in a climbing right turn in accordance with the departure procedure. We were given continual TA's. We were completing after takeoff items and climb items and setting navaids for flight progression. Departure was calling traffic and questioned our altitude and assigned altitude. I realized we had flown through 4000 ft to 5300 ft. Captain was correcting to 5000 ft, but realized we missed 4000 ft. We remained at 5000 ft and were given further climb instructions and phone number. Continued flight in accordance with ATC and flight plan.

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Original NASA ASRS Text

Title: A CPR C500 CLBS 1300 FT ABOVE ITS ASSIGNED ALT DURING THE DEP SID OUT OF SJC, CA.

Narrative: ORIGINAL CLRNC ALT WAS 5000 FT. WAS AMENDED DURING TKOF CLRNC TO 4000 FT. WE WERE CLRED FOR TKOF, FOLLOWING THE DEP PROC IN A CLBING R TURN IN ACCORDANCE WITH THE DEP PROC. WE WERE GIVEN CONTINUAL TA'S. WE WERE COMPLETING AFTER TKOF ITEMS AND CLB ITEMS AND SETTING NAVAIDS FOR FLT PROGRESSION. DEP WAS CALLING TFC AND QUESTIONED OUR ALT AND ASSIGNED ALT. I REALIZED WE HAD FLOWN THROUGH 4000 FT TO 5300 FT. CAPT WAS CORRECTING TO 5000 FT, BUT REALIZED WE MISSED 4000 FT. WE REMAINED AT 5000 FT AND WERE GIVEN FURTHER CLB INSTRUCTIONS AND PHONE NUMBER. CONTINUED FLT IN ACCORDANCE WITH ATC AND FLT PLAN.

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.