Narrative:

Prior to being cleared for visual approach, captain descended to 4500 ft when only cleared to 5000 ft. I missed the descent and only noticed once we were cleared for the visual to runway 28L. He was starting to correct back to 5000 ft when the visual approach clearance was issued.

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Original NASA ASRS Text

Title: CAPT OF A DC9 OVERSHOT INITIAL APCH ALT AND WAS CORRECTING BACK WHEN APCH CTLR CLRED HIM FOR A VISUAL APCH. THE FO NOTICED THE MISTAKE WHEN THE CTLR ACTUALLY CLRED THEM FOR THE APCH.

Narrative: PRIOR TO BEING CLRED FOR VISUAL APCH, CAPT DSNDED TO 4500 FT WHEN ONLY CLRED TO 5000 FT. I MISSED THE DSCNT AND ONLY NOTICED ONCE WE WERE CLRED FOR THE VISUAL TO RWY 28L. HE WAS STARTING TO CORRECT BACK TO 5000 FT WHEN THE VISUAL APCH CLRNC WAS ISSUED.

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.