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A large transport during cruise and approach suspected a fuel leak due to imbalance between left and right tanks, caused by engine fuel leak.
| Attributes | |
| ACN | 544027 |
| Time | |
| Date | 200204 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| 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 : first officer |
| Qualification | pilot : flight engineer pilot : atp pilot : commercial |
| Experience | flight time last 90 days : 200 flight time total : 9000 flight time type : 2200 |
| ASRS Report | 544027 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : fuel quantity indiators other flight crewa other flight crewb |
| Resolutory Action | none taken : unable |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Aircraft |
Narrative:
En route between ZZZ and ZZZ1, the crew observed a fuel imbalance between the left and right wing tanks. Fuel was balanced by xfeeding but the situation continued to reoccur. A fuel leak was suspected/probable but not visually confirmed because the engine fuel flows were equal and constant throughout the flight and no fuel was seen leaking from the engine or wing. ZLA and las approach provided direct routing and the flight landed at ZZZ1 with adequate fuel. Maintenance confirmed a fuel leak in the engine at ZZZ1.
Original NASA ASRS Text
Title: A LARGE TRANSPORT DURING CRUISE AND APCH SUSPECTED A FUEL LEAK DUE TO IMBALANCE BTWN L AND R TANKS, CAUSED BY ENG FUEL LEAK.
Narrative: ENRTE BTWN ZZZ AND ZZZ1, THE CREW OBSERVED A FUEL IMBALANCE BTWN THE L AND R WING TANKS. FUEL WAS BALANCED BY XFEEDING BUT THE SIT CONTINUED TO REOCCUR. A FUEL LEAK WAS SUSPECTED/PROBABLE BUT NOT VISUALLY CONFIRMED BECAUSE THE ENG FUEL FLOWS WERE EQUAL AND CONSTANT THROUGHOUT THE FLT AND NO FUEL WAS SEEN LEAKING FROM THE ENG OR WING. ZLA AND LAS APCH PROVIDED DIRECT ROUTING AND THE FLT LANDED AT ZZZ1 WITH ADEQUATE FUEL. MAINT CONFIRMED A FUEL LEAK IN THE ENG AT ZZZ1.
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.