The investigation report says Air India did not carry out those inspections - prompting speculation that the accident could have been caused by faulty switches being flipped by accident. However, in an internal note seen by the BBC, the FAA has since reiterated its belief that the issue did not compromise safety.

Amid ongoing investigations into the Air India Boeing 787-8 crash in Ahmedabad, aviation expert Captain Mohan Ranganathan suggests human error was the primary cause. As pilots' associations defend the crew's actions,