http://bigstory.ap.org/article/uk-in...or-beacon-787s
http://www.reuters.com/article/2013/...96H0XC20130718
http://www.bbc.co.uk/news/business-23364389
The emergency locator transmitter (beacon).
Or the ELT's lithium manganese battery:
http://news.sky.com/story/1117523/he...ked-to-battery
...Though they are all reading the same report.
Now, at this point, the AAIB is just recommending that all ELTs on 787s be disconnected. But by not saying that all of these Honeywell ELTs in all aircraft should be disconnected, are they indicating a continuing uncertainty about the 787 in particular, or are they anxious about the effects of a far wider directive? Perhaps testing will be required for more precision as to the cause.