Accidents and Incidents
Kalka Mail which derailed on 10 July 2011 was being hauled by a WAP-7 locomotive.
Malfunction of the undergear of the locomotive could also be a reason. The driver of the Kalka Mail said he saw the engine shaking.
A post-accident diagnostic revealed that the first axle (leading) of the locomotive registered a jerk and the fourth axle (trailing bogie) showed loss of contact of the wheel with the track.
The locomotive in question (30221) has been re-railed and is undergoing fault diagnostics and repairs.
Read more about this topic: Indian Locomotive Class WAP-7
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