Thanks Randy for sharing your experience. I had not considered an advocate to assist.

As you read, this only became consistent 3 years ago & I have no hearing loss. Just outright aggravation at the constant crackling. I was wondering is there had been any noise studies at the Navfacs concerning the vacuum systems, the always on noise from the actuators, & the A/C. Does anyone know of such a study, and if so, what the numbers were or the results of the studies or where to dig them up?

I had to fight through this also. I have 10% service connected for tinnitus. The hearing loss was denied even though above 3k hz
I can't hear anything.
Crazy system.