Narrative:

Went out and performed my preflight. The aircraft is unbelievably dirty; to the point where it is impossible to determine if the aircraft is safe to fly. Both engine pylons have numerous fluid streaks from rivets; every control surface has hydraulic fluid stains to the trailing edge. Both main wheel wells are completely black and look as if they are covered in soot from a fire. The outflow valves have long brown streaks from them that are worse than what you would have seen back in the days of smokers on the aircraft. It is impossible to see the color on the blowout disks for the fire bottle. The bottom of the aircraft is completely bathed in hydraulic fluid from the wing to the tail cone. You have to assume that the aircraft has multiple serious leaks now. It required assistance from maintenance to determine that in fact the aircraft was not leaking. The aircraft has been previously written up for being dirty. This is beyond dirty. This is beyond scaring the passenger. This is now a safety of flight issue and it is impossible to determine if the aircraft is airworthy.

Related reports:

Google
 

Original NASA ASRS Text

Title: WALKAROUND INSPECTION OF AN A300 REVEALED EVIDENCE OF POSSIBLE HYD LEAKS; BUT DIRTY CONDITION OF THE FUSELAGE MADE A DETERMINATION OF THE ACFT CONDITION DIFFICULT.

Narrative: WENT OUT AND PERFORMED MY PREFLT. THE ACFT IS UNBELIEVABLY DIRTY; TO THE POINT WHERE IT IS IMPOSSIBLE TO DETERMINE IF THE ACFT IS SAFE TO FLY. BOTH ENG PYLONS HAVE NUMEROUS FLUID STREAKS FROM RIVETS; EVERY CTL SURFACE HAS HYD FLUID STAINS TO THE TRAILING EDGE. BOTH MAIN WHEEL WELLS ARE COMPLETELY BLACK AND LOOK AS IF THEY ARE COVERED IN SOOT FROM A FIRE. THE OUTFLOW VALVES HAVE LONG BROWN STREAKS FROM THEM THAT ARE WORSE THAN WHAT YOU WOULD HAVE SEEN BACK IN THE DAYS OF SMOKERS ON THE ACFT. IT IS IMPOSSIBLE TO SEE THE COLOR ON THE BLOWOUT DISKS FOR THE FIRE BOTTLE. THE BOTTOM OF THE ACFT IS COMPLETELY BATHED IN HYD FLUID FROM THE WING TO THE TAIL CONE. YOU HAVE TO ASSUME THAT THE ACFT HAS MULTIPLE SERIOUS LEAKS NOW. IT REQUIRED ASSISTANCE FROM MAINT TO DETERMINE THAT IN FACT THE ACFT WAS NOT LEAKING. THE ACFT HAS BEEN PREVIOUSLY WRITTEN UP FOR BEING DIRTY. THIS IS BEYOND DIRTY. THIS IS BEYOND SCARING THE PAX. THIS IS NOW A SAFETY OF FLT ISSUE AND IT IS IMPOSSIBLE TO DETERMINE IF THE ACFT IS AIRWORTHY.

Data retrieved from NASA's ASRS site as of January 2009 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.