B767 crew had fluid observed leaking over the wing.

Attributes
ACN	425410
Time
Date	199901
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : lecm
State Reference	FO
Altitude	msl bound lower : 27000 msl bound upper : 27000
Environment
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B767 Undifferentiated or Other Model
Navigation In Use	Other
Flight Phase	cruise other
Route In Use	enroute : other oceanic enroute : atlantic enroute other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	425410
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other other : unspecified
Resolutory Action	flight crew : declared emergency other
Consequence	Other

Narrative:

30 mins into the flight, flight attendant reported a passenger noted fluid on top of left wing. Cockpit crew member went back and verified fluid was trailing back from leading edge. Unable to determine source so decision was made to return to madrid. Overweight landing was made after reviewing all manuals and procedures. Emergency equipment was requested and landing was made at 357200 pounds. Sink rate 100 FPM at touchdown.

Original NASA ASRS Text

Title: B767 CREW HAD FLUID OBSERVED LEAKING OVER THE WING.

Narrative: 30 MINS INTO THE FLT, FLT ATTENDANT RPTED A PAX NOTED FLUID ON TOP OF L WING. COCKPIT CREW MEMBER WENT BACK AND VERIFIED FLUID WAS TRAILING BACK FROM LEADING EDGE. UNABLE TO DETERMINE SOURCE SO DECISION WAS MADE TO RETURN TO MADRID. OVERWT LNDG WAS MADE AFTER REVIEWING ALL MANUALS AND PROCS. EMER EQUIP WAS REQUESTED AND LNDG WAS MADE AT 357200 LBS. SINK RATE 100 FPM AT TOUCHDOWN.

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.