Narrative:

While on the ground at bos, and during the preflight phase, an FAA inspector came onboard to ramp check us and wanted to do a 'walkaround' preflight. During his 'walkaround' he found a small amount of fuel seeping from around an inspection plate, under the wing, which ended up grounding the aircraft. It was very difficult to see, for he found it by 'running' his finger under the wing.

Google
 

Original NASA ASRS Text

Title: AN ACR MAINT INSPECTOR RAMP CHKS AN ACFT THAT THE FO HAD ALREADY PREFLTED. ON THE WALKAROUND HE FINDS FUEL SEEPAGE UNDER THE WING AND GROUNDS THE ACFT.

Narrative: WHILE ON THE GND AT BOS, AND DURING THE PREFLT PHASE, AN FAA INSPECTOR CAME ONBOARD TO RAMP CHK US AND WANTED TO DO A 'WALKAROUND' PREFLT. DURING HIS 'WALKAROUND' HE FOUND A SMALL AMOUNT OF FUEL SEEPING FROM AROUND AN INSPECTION PLATE, UNDER THE WING, WHICH ENDED UP GROUNDING THE ACFT. IT WAS VERY DIFFICULT TO SEE, FOR HE FOUND IT BY 'RUNNING' HIS FINGER UNDER THE WING.

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.