Boeing's mid-air Tragedies

The Boeing 737 is regarded as one of the world's safest and most widely used aircraft but faith in the manufacturer was rocked when Boeing introduced the updated 737 MAX. Two brand new planes dropped out of the sky, killing more than 300 people, and the new model was grounded worldwide.

Lengthy investigations found the plane was safe to fly but 7.30 has compiled dozens of mid-air safety incidents, and now a former Boeing insider is going public with startling claims.

This exclusive report from Kathryn Diss and producer John Stewart from ABC Investigations.