The Aircraft Accident Investigation Bureau (AAIB), which is leading the probe, is expected to release its initial findings today.

A recent report by Wall Street Journal stated the investigation was focusing on the actions of the jet’s pilots and doesn’t so far point to a problem with the Boeing 787 Dreamliner.

Reports said the investigators told a Parliamentary panel that the plane's black boxes were not damaged. The revelation about the devices was critical to reconstructing the events leading up to the crash.