[mcpherrinm]

The Lac-Megantic crude oil train derailment/fire disaster is rather horrific example of that "annoying" property, where an insufficient number of manual brakes were applied, and an engine fire caused the engine proving air pressure to be shut down.

https://en.wikipedia.org/wiki/Lac-M%C3%A9gantic_rail_disaste...

[dredmorbius]

I was aware of brake failure as a factor in the Lac-Megantic disaster, but not that this was the specific cause.