I know this is not the ideal thread to make this posting, but the Chinook thread has been closed.
In a 2006 US student's handout for the Chinook "power plant", the DECU box is described as being a,
"Cast aluminum housing, protecting the internal operation from Electromagnetic Interference (EMI), Radio Frequency Interference (RMI), and Electromagnetic Pulse (EMP)".
Does anyone know if it was alway constructed this way, as I find this an unusual statement to make in this type of handout.
DV