The deadly Air India crash last month has renewed a decades-old debate in the aviation industry over installing video cameras monitoring airline pilot actions to complement the cockpit voice and flight data recorders already used by accident investigators.

The release over the weekend of the preliminary report on last month’s deadly crash of an Air India flight has stirred controversy in the aviation community with some asserting that the crash could have been caused only by pilot suicide.

IATA's Willie Walsh advocates for cockpit video recording to enhance accident investigations, citing the Air India crash as a potential case where vid

Medical records for an Air India pilot killed in last month’s crash are reportedly now being reviewed by investigators amid reports he’d been suffering from depression and other mental

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.

Air India said on Tuesday it would partially restore its international flight schedule that was scaled back following the accident involving flight AI171 on June 12.

The CEO of Air India sought to draw a line under rife speculation around the cause of last month's air disaster in Ahmedebad, saying the preliminary investigation had ruled out a mechanical cause for the crash.

Earlier, India's aviation minister said not to jump to conclusions and another pilots' group criticised the report.