snanceki: re Airfoilmod
There is probably good reason to withold investigative communication from the public.
There are several I can think of, but the obvious reason is they must be free to speculate about all the possibilities in order to eliminate those they can. Publishing their speculations would lead to the inevitable 'selective emphasis' that sells newspapers by disturbing the public. L-38 has a timely example of this.
re your questions:
If they don’t understand the causal reasons how can anybody assume
1. Causal factor(s) was unique to BA038
2. Causal factor(s) won’t happen again.
Should we assume they don’t understand the causal factors?
Now you are doing it.
The 777 has built up a good safety record. The process leading to this failure has only been seen on this flight. Selective emphasis describes this as unique then suggests complacency within the investigation by asking for evidence of uniqueness.
The investigators will obviously look at what was different about this flight. They will also look into all the history - of this aircraft type and of all past accidents - to see whether anything already known about might have contributed here. As the investigation proceeds factual evidence and careful testing will eliminate some possibilities, and may reveal new factors to be considered and eliminated in turn.
This process has to be undertaken by specialists who understand aircraft, who know how accidents happen, and who are as dispassionate as it is possible to be in sometimes harrowing circumstances.
Air travel is as safe as human endeavour can make it - and that is very safe.
And that doesn't sell newspapers.