Bengaluru, June 13 -- Aviation expert Devesh Agarwal on Friday stressed that plane crashes are rarely caused by a single factor and called for a thorough investigation into the crash of Air India flight AI-171 Boeing 787-8 Dreamliner in Gujarat's Ahmedabad.

Speaking to ANI, Agarwal said, "Accidents never happen due to a single point of reason. There are always a series of reasons. That's why it is important to investigate this matter..."

Backing the aircraft's credibility, he added, "This 787 Dreamliner plane is the most modern plane. It is the latest aircraft of Boeing...All the safety systems are intact...The engines used in this flight are not a new development. The engines installed here are very reliable engines. All the airlines, ...