FWIW, any time spent researching this for you paid off, that is the first time I caught something like that in a sound file. Makes me wonder what other ones out there exist. It might be such it's not normally invoked or played, or played at random. Also being part of the wreck sequence, not sure how many people use that. Again, there are sounds in this file that might not ever get normally played by the firmware on the engine, or not easily invoked. Again, somebody at MTH was having fun that day- clearly audible in that file.
But definitely,- I'm now copying that into other engine files to run at the local club for fun. I almost want that as a softkey -"Save the Chickens".