Narrative:

While receiving vectors for a visual approach at ont, controller asked if we had airport in sight. Captain and first officer were pretty familiar with socal area and answered in the affirmative. The so was not familiar with the area. However, I had an airport in sight which I believed to be ont. As we proceeded toward the airport in sight, we noted that the localizer was not coming in. Still, we proceeded on the visual approach as cleared. The controller asked us several times if we had 'ont' in sight and then suggested vectors. Just as we realized that we were lined up to land at chino, the controller ordered us to climb to 2500 ft. We did so, called ont in sight, and were reclred for a visual approach. Unless absolutely familiar, pilots should request vectors to the final approach course.

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Original NASA ASRS Text

Title: A B747 CARGO FLC STARTS AN APCH TO A WRONG ARPT WHEN HAVING RECEIVED VECTORS TOWARDS ONT BUT HEADING FOR CNO, CA.

Narrative: WHILE RECEIVING VECTORS FOR A VISUAL APCH AT ONT, CTLR ASKED IF WE HAD ARPT IN SIGHT. CAPT AND FO WERE PRETTY FAMILIAR WITH SOCAL AREA AND ANSWERED IN THE AFFIRMATIVE. THE SO WAS NOT FAMILIAR WITH THE AREA. HOWEVER, I HAD AN ARPT IN SIGHT WHICH I BELIEVED TO BE ONT. AS WE PROCEEDED TOWARD THE ARPT IN SIGHT, WE NOTED THAT THE LOC WAS NOT COMING IN. STILL, WE PROCEEDED ON THE VISUAL APCH AS CLRED. THE CTLR ASKED US SEVERAL TIMES IF WE HAD 'ONT' IN SIGHT AND THEN SUGGESTED VECTORS. JUST AS WE REALIZED THAT WE WERE LINED UP TO LAND AT CHINO, THE CTLR ORDERED US TO CLB TO 2500 FT. WE DID SO, CALLED ONT IN SIGHT, AND WERE RECLRED FOR A VISUAL APCH. UNLESS ABSOLUTELY FAMILIAR, PLTS SHOULD REQUEST VECTORS TO THE FINAL APCH COURSE.

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.