Air carrier medium large transport continued takeoff and flight to destination after another air carrier aircraft reported seeing a puddle of fluid near the right main gear as the aircraft was holding for takeoff clearance.

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Attributes
ACN	111912
Time
Date	198905
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : wdf airport : dfw
State Reference	TX
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : ewr
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : takeoff ground : holding
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : instrument pilot : atp pilot : commercial
Experience	flight time last 90 days : 160 flight time total : 6000 flight time type : 1200
ASRS Report	111912
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 100 flight time total : 3400 flight time type : 9
ASRS Report	111872
Events
Anomaly	aircraft equipment problem : less severe
Independent Detector	other other : unspecified
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

While holding short of runway for takeoff, ground control informed us of aircraft behind us observing a puddle of fluid by right main gear. We had no indications of any fluid loss in cockpit. Decided to taxi back to ramp. An airport operations vehicle came out and inspected puddle and said it was water. We returned to runway for takeoff. Upon arriving at destination we discovered a leak in the right main gear brakes, causing a brake change and large delay. Even after discovering the leak at destination we still had no loss of fluid on cockpit gauges. The total loss was so low it never indicated! We also had no abnormal brakes.

Original NASA ASRS Text

Title: ACR MLG CONTINUED TKOF AND FLT TO DESTINATION AFTER ANOTHER ACR ACFT REPORTED SEEING A PUDDLE OF FLUID NEAR THE RIGHT MAIN GEAR AS THE ACFT WAS HOLDING FOR TKOF CLRNC.

Narrative: WHILE HOLDING SHORT OF RWY FOR TKOF, GND CTL INFORMED US OF ACFT BEHIND US OBSERVING A PUDDLE OF FLUID BY RIGHT MAIN GEAR. WE HAD NO INDICATIONS OF ANY FLUID LOSS IN COCKPIT. DECIDED TO TAXI BACK TO RAMP. AN ARPT OPERATIONS VEHICLE CAME OUT AND INSPECTED PUDDLE AND SAID IT WAS WATER. WE RETURNED TO RWY FOR TKOF. UPON ARRIVING AT DEST WE DISCOVERED A LEAK IN THE RIGHT MAIN GEAR BRAKES, CAUSING A BRAKE CHANGE AND LARGE DELAY. EVEN AFTER DISCOVERING THE LEAK AT DEST WE STILL HAD NO LOSS OF FLUID ON COCKPIT GAUGES. THE TOTAL LOSS WAS SO LOW IT NEVER INDICATED! WE ALSO HAD NO ABNORMAL BRAKES.

Data retrieved from NASA's ASRS site as of August 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.