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A B767-300 in cruise at FL350 noticed a fuel imbal between the left and right tanks. Fuel flows equal, no visible fuel leak. On ground, maintenance found engine leak located near input to fuel flow transmitter.
| Attributes | |
| ACN | 543626 |
| Time | |
| Date | 200204 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : abq.airport |
| State Reference | NM |
| Altitude | msl single value : 35000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zab.artcc tower : zzz.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 80 flight time total : 14000 flight time type : 490 |
| ASRS Report | 543626 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : fuel qty indicators other flight crewa other flight crewb |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Aircraft |
Narrative:
En route between atl and las, crew noticed a fuel imbal between left and right tanks. Fuel was balanced by xfeeding. Because the situation recurred, a fuel leak was suspected but was not confirmable because engine fuel flows were equal and no fuel was visibly leaking from engine or wing. The flight arrived at destination with adequate fuel, and maintenance then confirmed a fuel leak in the engine prior to the fuel flow transmitter.
Original NASA ASRS Text
Title: A B767-300 IN CRUISE AT FL350 NOTICED A FUEL IMBAL BTWN THE L AND R TANKS. FUEL FLOWS EQUAL, NO VISIBLE FUEL LEAK. ON GND, MAINT FOUND ENG LEAK LOCATED NEAR INPUT TO FUEL FLOW XMITTER.
Narrative: ENRTE BTWN ATL AND LAS, CREW NOTICED A FUEL IMBAL BTWN L AND R TANKS. FUEL WAS BALANCED BY XFEEDING. BECAUSE THE SIT RECURRED, A FUEL LEAK WAS SUSPECTED BUT WAS NOT CONFIRMABLE BECAUSE ENG FUEL FLOWS WERE EQUAL AND NO FUEL WAS VISIBLY LEAKING FROM ENG OR WING. THE FLT ARRIVED AT DEST WITH ADEQUATE FUEL, AND MAINT THEN CONFIRMED A FUEL LEAK IN THE ENG PRIOR TO THE FUEL FLOW XMITTER.
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.