As an engineer in a completely different industry, I often refer to air crash investigations as an example of how to learn from mistakes and improve the product.
One thing that has always impressed me is that AAIB reports are written in clear English with any jargon and acronyms explained, so those not involved in the aviation industry can understand them.
It's a bit of a surprise then, that the first recommendation of the report is ....initiate action for making inert.....
This has been reported in the media as 'switching off' which is plainly the wrong interpretation.
As it is unknown if the fault was internal or external to the battery pack, would it not have been better to recommend removal of the ELT or the ELT battery?
Does 'making inert' offer other options, like encasing the battery pack in a metal box, and surrounding it with a flame suppressant material?