Narrative:

During preflight we noticed a streak in an unusual spot on the underside of the wing. Upon further inspection we noted that the streak was in fact fuel. The location of the fuel leak was concerning to us as it was coming from a riveted area normally painted over and seamless. I am submitting this [report] in case this is something that is of a systemic nature.

Google
 

Original NASA ASRS Text

Title: CE750 Flight Crew reports discovering a fuel leak on the bottom of the right wing during preflight.

Narrative: During preflight we noticed a streak in an unusual spot on the underside of the wing. Upon further inspection we noted that the streak was in fact fuel. The location of the fuel leak was concerning to us as it was coming from a riveted area normally painted over and seamless. I am submitting this [report] in case this is something that is of a systemic nature.

Data retrieved from NASA's ASRS site as of July 2013 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.