The AAIB investigation report on the Kozhikode plane crash said that the PF (pilot flying) had not adhered to the SOP and ignored a warning call by the PM (pilot monitoring) and that caused the tragic accident. 

• On Saturday(11-09-2021), the Aircraft Accident Investigation Bureau (AAIB) released its investigation report into the tragic accident of Air India Express flight IX1344 that had claimed the lives of 21 persons, including both the pilots on board.
• The report said that the PF (pilot flying) had not adhered to the SOP and ignored a warning call by the PM (pilot monitoring) and that led to the fatal accident.
• He continued an unstabilized approach and landed beyond the touchdown zone, half way down the runway, in spite of ‘Go Around’ call by PM (pilot monitoring) which warranted a mandatory ‘Go Around’ and the failure of the PM to take over controls and execute a ‘Go Around’."

Air India Express Flight 1344 was a scheduled international flight on 7 August 2020 from Dubai, United Arab Emirates, to Kozhikode, India, landing at Calicut International Airport. The flight was part of the Vande Bharat Mission to repatriate Indian nationals stranded due to the COVID-19 pandemic. The flight crew aborted two landing attempts because of heavy rain and tailwind. On the third landing attempt, the aircraft touched down on runway 10, but skidded off the end of the tabletop runway and slid down a 9–10.5 m (30–35 ft) slope, killing 21 passengers and both pilots. The four cabin crew members and 165 passengers survived, of whom over 100 were injured. This was the second fatal accident involving Air India Express, after the 2010 Mangalore crash.