Narrative:

During descent to san, we were given a series of altitude clrncs from 11000 ft to 7000 ft, and then to 5000 ft. We were IMC and avoiding thunderstorms via airborne radar. During the descent, subsequent altitude clrncs were received prior to reaching the previously assigned altitude. Prior to reaching 5000 ft, the first officer believed a clearance for 3000 ft was issued and input that altitude into the altitude alert window. The clearance was announced by the first officer but not acknowledged by the captain due to task saturation with thunderstorm avoidance. After descending through 5000 ft, the controller issued a clearance to level off at 3800 ft. Leveloff at 3800 ft was complied with.

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Original NASA ASRS Text

Title: FLC OF AN ACR MLG OVERSHOT ASSIGNED ALT DURING DSCNT CLRNC.

Narrative: DURING DSCNT TO SAN, WE WERE GIVEN A SERIES OF ALT CLRNCS FROM 11000 FT TO 7000 FT, AND THEN TO 5000 FT. WE WERE IMC AND AVOIDING TSTMS VIA AIRBORNE RADAR. DURING THE DSCNT, SUBSEQUENT ALT CLRNCS WERE RECEIVED PRIOR TO REACHING THE PREVIOUSLY ASSIGNED ALT. PRIOR TO REACHING 5000 FT, THE FO BELIEVED A CLRNC FOR 3000 FT WAS ISSUED AND INPUT THAT ALT INTO THE ALT ALERT WINDOW. THE CLRNC WAS ANNOUNCED BY THE FO BUT NOT ACKNOWLEDGED BY THE CAPT DUE TO TASK SATURATION WITH TSTM AVOIDANCE. AFTER DSNDING THROUGH 5000 FT, THE CTLR ISSUED A CLRNC TO LEVEL OFF AT 3800 FT. LEVELOFF AT 3800 FT WAS COMPLIED WITH.

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.