A300
Flight Crew Last 90 Days 65; Flight Crew Total 8200; Flight Crew Type 2300
Distraction; Human-Machine Interface; Time Pressure; Troubleshooting
Aircraft Equipment Problem Critical; Inflight Event / Encounter Fuel Issue
Flight Crew Diverted; Flight Crew Landed As Precaution; General Maintenance Action
Aircraft
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.
[Narrative #2 had no additional information.]
An A300 crew diverted for a suspected fuel leak and after landing; maintenance discovered a fuel leak in the left outer tank valve.