<< >> NASA ASRS Report 1000515, March 2012

An A300 crew diverted for a suspected fuel leak and after landing; maintenance discovered a fuel leak in the left outer tank valve.

Attributes
ACN	1000515
Time
Date	201203
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	A300
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	Fuel Distribution System
Person 1
Function	First Officer Pilot Flying
Experience	Flight Crew Last 90 Days 65 Flight Crew Total 8200 Flight Crew Type 2300
Person 2
Function	Pilot Not Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 100 Flight Crew Total 8500 Flight Crew Type 1500
Events
Anomaly	Aircraft Equipment Problem Critical Inflight Event / Encounter Fuel Issue

Narrative:

About an hour after takeoff we noticed the left outer tank was 1;000 pounds less than the right outer tank we observed the tank quantity and it was decreasing; we then accomplished the checklist and since we couldn't verify where the fuel was going we suspected a fuel leak. The checklist advised us to land as soon as possible; we were about 80 miles south of a major airport at the time and we chose that as our diversion airport. Maintenance confirmed that the valve in the left outer tank was leaking.

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Original NASA ASRS Text

Title: An A300 crew diverted for a suspected fuel leak and after landing; maintenance discovered a fuel leak in the left outer tank valve.

Narrative: About an hour after takeoff we noticed the left outer tank was 1;000 LBS less than the right outer tank we observed the tank quantity and it was decreasing; we then accomplished the checklist and since we couldn't verify where the fuel was going we suspected a fuel leak. The checklist advised us to land ASAP; we were about 80 miles south of a major airport at the time and we chose that as our diversion airport. Maintenance confirmed that the valve in the left outer tank was leaking.

Data retrieved from NASA's ASRS site as of July 2013 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.