Investigative approach taken by the KNKT/NTSC ?
What I would like to understand is the huge difference between how the AirAsia and the latest TransAsia accidents are treated by the respective national authorities (both acting under ICAO Rules).
In the AirAsia case the (investigation) authorities have published few preliminary facts (radar, FDR and CVR data). But have published some short ‘final opinion’ conclusions( {we know what happened} “ we have the ‘key‘ “ – and – “it was not a suicide”).
In the TransAsia case the (investigation) authorities have already published many preliminary facts (radar, FDR and CVR data). And have published a ‘preliminary factual’ conclusion (one engine out and the second good one shut down too).
From a professional personal point of view you learn much much more from getting the preliminary facts yourself, struggle with them to find probable cause and contributing factors, and then compare these when preliminary, interim and final reports are published. The main learning moments being where the professional official report either confirms or rejects your professional personal conclusions.
From that professional viewpoint you can only be very very happy with the approach taken by the Taiwanese ASC. And at the same time negatively surprised by the approach taken by the Indonesian KNKT/NTSC.
In context, the Taiwanese ‘political’ risks appeared to be much greater than the Indonesian ones. Declaring the pilot a hero ( while keeping the ‘from hero to villain pilot’ case after rolling the 747 in mind ). Possibly shutting down the good engine too (keeping the UK 737 case in mind). And the mainland Chinese passengers (keeping general politics and MH370 emotions in mind).
In the Indonesian case no-one, not a single mention on Pprune I think, suggested a suicide. And no-one expects an investigation team to have the ‘key’ in an early stage. There is a lot of information that can be published without having any political overtones. Publishing the MH370 take-off fuel weight for instance would also have harmed no one, on the contrary one could even say.
Is there a Pprune member who has an informed opinion on this. And can give us a better understanding of how the Indonesian investigation might view its own QZ8501 approach.