Narrative:

Hydraulic leak observed by flight crew on preflight walk around. Found leak in right wheel well on landing gear valve and manifold assembly; leaking o-ring. Replaced o-ring in green hydraulic system fitting. Leak checks ok.wrenches may have been left on platform in wheel well. There is a large work platform in the A330 wheel well under the manifold assembly. Wrenches used to repair problem may have been left on that platform. Aircraft departed before wrenches were found to be missing.

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Original NASA ASRS Text

Title: After repairing an A330 hydraulic leak a Mechanic realized; after the aircraft departed; that he may have left tools in the wheel well on the aircraft work platform.

Narrative: Hydraulic leak observed by flight crew on preflight walk around. Found leak in right wheel well on landing gear valve and manifold assembly; leaking o-ring. Replaced O-ring in Green hydraulic system fitting. Leak checks OK.Wrenches may have been left on platform in wheel well. There is a large work platform in the A330 wheel well under the manifold assembly. Wrenches used to repair problem may have been left on that platform. Aircraft departed before wrenches were found to be missing.

Data retrieved from NASA's ASRS site as of April 2012 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.