Tragedy struck this week when a plane crashed in the city of Ahmedabad just shortly after takeoff, leaving investigators and aviation officials with many questions.

Over the years, numerous improvements in aircraft design, maintenance and operational procedures have resulted from crash investigations. Each incident, especially a fatal one such as the Air India Boeing 787 crash, offers valuable lessons that can drive further enhancements in aviation safety.

Indian investigators have recovered the digital flight data recorder or the black box of the Air India flight that crashed a day earlier.

The Air India flight fell from the sky on Thursday and killed at least 270 people in Gujarat state, officials said Saturday.

HONG KONG — An Air India flight returned to Hong Kong on Monday shortly after takeoff due to a midair technical issue, days after another of the airline’s flights crashed and killed at least 270 people.