Well, but what about this part: "When the data from the first two ADIRUs is inconsistent then the flight computer uses the data it received 1.2 seconds previou

Well, but what about this part: "When the data from the first two ADIRUs is inconsistent then the flight computer uses the data it received 1.2 seconds previously. However, the software couldn’t handle the two ADIRUs putting out data spikes that were more than 1.2 seconds apart and this caused the plane to behave erratically." I assume _this_ is the error referenced in the title. Whatever caused the black box to fail, the result was that the code afterwards failed in software, as far as I read the text.