Airbus QC

Just got this from the chief pilot-

"Airbus recently discovered some ribs near the engine pylon spar box that
might not have received the necessary extensive heat-treatment in production
prior to installation. The omission reduces the material allowable yield
stress. As a consequence the non-heat treated ribs may not be able to meet
all certification requirements. This is especially true for vertical loads
associated with vertical gusts. No industry incidents have occurred.
However, Airbus alerted operators to require strict adherence to turbulent
air penetration speeds."


D.