A veil of mystery covers the crash of Air India’s aircraft last month as the investigation so far shows “shows” their pilots and actionsand does not demonstrate technical problems in the Boeing 787 Dreamliner or GE Aerospace engines. The preliminary findings of the research reveal the exclusive report by the Wall Street Journal citing sources knowing the first estimates of US officials.

Preliminary findings show that switches that control fuel flow to two engines of the aircraft were disabled, leading to the apparent in thrust loss Shortly after the take -off, the sources said. Pilots use switches to start the aircraft’s engines, extinguish them or restore them to some emergency situations.

Switches would normally be activated during flight and It is not clear how or why they were disabledthese sources mentioned. They also noted that it is not clear If the movement was random or deliberate, or if there was an attempt to re -activate.

If the switches were turned off, this could explain why the jet emergency generator – known as the RAM airbag, or Rat – appears to have been activated shortly before the aircraft falls on a nearby dormitory for medical students. In total, 260 people died, including all the occupants on the plane outside.

India’s aircraft accident investigation office, which leads the investigation, is expected to issue a preliminary report just on Friday local time. Did not respond to a request for annotation on Thursday.

“Nothing can be said about the cause of the crash right now, because the research is ongoing.”said Indian Civil Aviation official Murlindhar Mochol on the NDTV news channel in late June. “It’s a very rare incident – both engines have never happened at the same time.”