Air India and Boeing are in the midst of significant turnarounds, but knowing the cause of the crash of Flight 171 will take a lengthy investigation.

An Air India crash Thursday involved a Boeing 787-8 Dreamliner, which the aircraft manufacturer first delivered 14 years ago.

Boeing 787 Dreamliner — with 242 people on board crashed into a medical college complex in the Meghaninagar area moments after taking off from the airport on Thursday afternoon.

It’s also the latest disaster to hit the beleaguered American aerospace giant — which has been dogged by a door that blew off a 737 jet, a leaky spacecraft that stranded astronauts on the International Space Station for months, as well as politically damaging delays in outfitting the new Air Force One jets.

It could take months to fully understand what went wrong in the crash, the first involving a Dreamliner. Officials from India continued the investigation Friday.

The Dreamliner crash echoes the catastrophic 737 MAX crashes of 2018 and 2019, which killed 346 people and exposed profound flaws in Boeing's design and certification processes. Ed Pierson, a 737 MAX whistleblower and former Boeing engineer, starkly warned senators last year that:

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