- There are two main views for the disappearance: mechanical fault or a pilot gone rogue
- In most pilot suicide cases, potential reasons are uncovered quickly
Richard Quest is CNN's Aviation Correspondent and author of "The Vanishing of Flight MH370," a new book that examines the flight's disappearance, two years on. The opinions in this commentary are his.
(CNN)Two years after MH370 went missing and key questions remain unanswered: Where is the plane and what happened in the cockpit in the early hours of March 8, 2014?