Narrative:

We were cleared to land on approximately 7 mi left base leg. Local controller was very busy with many light aircraft in pattern and waiting for takeoff. As we descended through 400-300 ft, I saw a dark blue or black single engine cessna starting its takeoff roll. Immediately started go around, passed the just airborne cessna on the right and climbed straight ahead awaiting explanation or instructions from local controller. We had to ask what she wanted us to do. Made a right hand circuit and landed without incident. Controller had apparently forgotten about the aircraft on the runway, as we heard no warning about it. The cessna's all-over dark color made it difficult to see on the asphalt runway. Local controller must have been distracted or for some reason lost the awareness of the cessna's apparent late departure. Never received explanation or apology from ATC.

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Original NASA ASRS Text

Title: APCH TO OCCUPIED RWY EVOLVES INTO A GAR BY CPR JET.

Narrative: WE WERE CLRED TO LAND ON APPROX 7 MI L BASE LEG. LCL CTLR WAS VERY BUSY WITH MANY LIGHT ACFT IN PATTERN AND WAITING FOR TKOF. AS WE DSNDED THROUGH 400-300 FT, I SAW A DARK BLUE OR BLACK SINGLE ENG CESSNA STARTING ITS TKOF ROLL. IMMEDIATELY STARTED GAR, PASSED THE JUST AIRBORNE CESSNA ON THE R AND CLBED STRAIGHT AHEAD AWAITING EXPLANATION OR INSTRUCTIONS FROM LCL CTLR. WE HAD TO ASK WHAT SHE WANTED US TO DO. MADE A R HAND CIRCUIT AND LANDED WITHOUT INCIDENT. CTLR HAD APPARENTLY FORGOTTEN ABOUT THE ACFT ON THE RWY, AS WE HEARD NO WARNING ABOUT IT. THE CESSNA'S ALL-OVER DARK COLOR MADE IT DIFFICULT TO SEE ON THE ASPHALT RWY. LCL CTLR MUST HAVE BEEN DISTRACTED OR FOR SOME REASON LOST THE AWARENESS OF THE CESSNA'S APPARENT LATE DEP. NEVER RECEIVED EXPLANATION OR APOLOGY FROM ATC.

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.