The investigation into Air India flight 171 crash opens up questions into the many concerns surrounding Boeing's 787.

The crash happened just weeks after the company cut a deal with the U.S. government to avoid taking criminal responsibility for a pair of deadly crashes in 2018 and 2019.

Viswashkumar Ramesh, 40, the sole survivor of Air India Flight 171, is among the ranks of those spared by fate.