The most important factor that caused the derailment of the train is, when Lac-Megantic was testing its mandatory hand brakes test, the hand brakes and air brakes were left together, so during the test, the freight train were held by the hand brakes and air brakes, which gave the impression that the train was held only by the hand brakes, so the engineer and the rail traffic controller thought that the train was secure. Before the accident, the locomotive was reviewed by MMA’s repair shop eight months ago the accident, and MMA used a weak and not durable epoxy material that made the oil to concentrate in the turbocharger which produce fire the night of the accident. After the accident, the consequences were devastated, about six million litres
