Originally Posted by
60FltMech
Not super familiar with NH-90, is an uncontained engine failure very common for the RTM-322 engine used in this aircraft or has there been some embellishment as the story is told/retold by some that don’t know the real story? It seems this failure mode on modern turbine engines is becoming pretty rare.
The RTM322 is sensitive to spool bending after a time intervall of shut down.
Usually needs Engine vent procedure before another engine start to spread the temperatures.
If not done, it could lead to engine stagnation during engine start due to the compressor blades rubbing the housing. In the extreme case, later brake down in flight due to the damage.
There is at least one or two cases known of this happening.
Uncontained, as in releasing engine parts via the exhaust, yes thats probable.