Fire In Mid-Air

Pony Express Flight 817 is an inter-dimensional flight from Trottingham to Jakarta with 4 crew onboard a plane.

Aircraft
the aircraft was a 14-year-old Boeing 737-300F, It already flew around 27.000 hours flight time.

Cause
Equestria National Transportation Safety Board (ENTSB) saying that the cause of the Pony Express Flight 817 crash is the Ignition of one of the cargo, and it surprising that one of the cargo was a lithium battery and a faulty wire that connecting the plane flaps was torn off. The electrical wire struck into a cargo fill with a lithium battery this ignition may cause a wire, like Autopilot, Flaps and more being disable

Aftermath
after that Lithium Battery had to secure before can delivered. And all aircraft had to check the plane wires to prevent the disaster