flaps

Parts of the engine appeared to explode at one stage, and flaps on the side of the rocket caught fire and swung from side-to-side.

They drove the truck, which had “Got Milk” signs displayed on the mud flaps, along the 5 Freeway and 101 Freeway through Studio City, Hollywood and downtown and at times went onto surface streets.

"Or the Butterfly Effect. The analogy is that if a butterfly flaps its wings in Brazil, it could have an impact on the atmosphere across northern Europe, six days later."

Were the flaps improperly extended, reducing lift on a heavily loaded jet in extreme heat?

Three experts who spoke to BBC Verify suggested that the disaster may have occurred as the aircraft's flaps were not extended during take-off - though other pilots and analysts have challenged this.