Indian aviation accident authorities are set to release a preliminary report this week into the Air India Ltd. plane that crashed almost a month ago, a person familiar with the plan said.

Boeing stock was in a holding pattern on Tuesday as investors waited for details from flight data recorders from Air India flight 171, which crashed on June 12, less than a minute after taking off from an airport in Ahmedabad,

The investigation into the Air India crash is focusing on the movement of the engine fuel control switches following an analysis of the 787’s flight and voice data recorders, along with a simulation by Boeing of the aircraft’s final moments, one of the sources said.