Cubsrule wrote:This is a hair disingenuous, no? Isn't it one hundred percent AC's fault and/or the pilots' fault that the FDR data were not saved? It's convenient that they would lose the official data and then mysteriously find other data that benefit them days later.
In trial, when a party loses relevant evidence we often instruct jurors to presume that the evidence would have hurt the losing party. Perhaps that sort of presumption is appropriate here. Surely if the pilots believed that the FDR and/or CVR would exonerate them they would have taken steps to ensure preservation.
Convenient? Mysteriously? I actually had a chuckle about that.
As stated above, when the flight crew handed the aircraft over to maintenance on arrival, in their minds there was no need to pull the C/Bs on the FDR and CVR. As far as they thought, it was just an unstabilized missed approach. Nothing was hidden as appropriate reports were filed the next morning. If they thought there was anything needing "exoneration" then procedures would have been followed.
Perhaps you are not aware of the Flight Data Analysis program. Again, a part of advanced Safety Management Systems, most aircraft in a participating airline are equipped with FDA chips that use data from the FDR. This data is compiled and trends are noted. Using this data, training areas are focused and addressed.
Normally, the data is not looked at on an individual basis. As you can imagine, the amount of data is huge. However ... if any preset limits are exceeded, the event is flagged. The gatekeeper then contacts the crew personally to discuss the issue. It is entirely voluntary on both sides. (BTW, he is called a "gatekeeper" as this data is kept depersonalized normally unless personal contact is needed. It can never be punitive as safety is the only goal).
When the data eventually came to the gatekeeper's computer, it was flagged, and he, when looking at the event, realized at what he was looking, contacted his superiors. It was actually a fluke that it was found!
It reminded me of the engine data received by Rolls Royce as a fluke that led to possible information about Malaysian 370.
No one denied responsibility for the event. But as I said above ... we are past that. At this point, the issue is the chain of events that led to the occurrence itself. If that chain can be studied, then recurrence of the event can be avoided.