The Aircraft Accident Investigation Bureau (AAIB) is expected to release the preliminary investigation report into the fatal Ahmedabad Air India plane crash that claimed the lives of 260 people on June 12, as per a report by CNBC-TV18.

The report would provide details about the AI 171 aircraft, Boeing Dreamliner 787-8, its crew, conditions at the Ahmedabad airport, and weather on the day of the tragedy. Also, the report will include cockpit conversation, control inputs made by the pilots, and a timeline of the flight's last minutes.

The preliminary report will outline the procedures followed so far and their subsequent outcomes, along with the plausible next steps. The preliminary report is mandatory to be released within 30 days of the crash as per the International Civil Aviation Organization (ICAO) guidelines. 

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260 killed in deadliest crash in a decade

The Air India flight bound for London plunged and crashed into the BJ Medical College and Hospital's Hostel building within 32 minutes of taking off from the Ahmedabad Airport. A total of 242 people, including crew, were onboard. All of them but one were killed in the crash, which is the deadliest in a decade.

Initially, the death count was estimated to be above 270. However, DNA sampling and analysis, followed by handing over the bodies to the families, confirmed 260 fatalities in total.

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Soon after the attacks, safety and security concerns were raised on Boeing given its past incidents and whistleblower-flagged issues. However, the Air India  has affirmed its full compliance and adherance to security protocols and guidelines. The DGCA also mandated the airline to conduct a one-time security check, in which it found no major issues with the Boeing fleet. 

However, on June 21, the DGCA directed air line to remove three officials due to "repeated and serious violations" in crew scheduling and oversight. The aviation watchdog also conducted an overall assessment of the airlines and airport in which it found serious negligences and lapses. While the DGCA didn't name the concerns institution, the statement said that they were asked to take corrective measures within 7 days.