As the world waits for answers on the fatal Air India Boeing 787 crash, accident investigators have narrowed their focus on the engine fuel control switches.

According to sources, the report is expected to provide the sequence of events before the accident, a detailed description of the accident, and the steps so far in the investigation, along with any notable findings that may have come to light this far.

Investigators have hinted that pilot error will likely be deemed the cause of the disaster, with a focus on the engine fuel control switches.