I found this circuit board in our dumpster and I wonder if anyone know what it is. I've Googled some of the number without much luck other than hints at it being from aviation. With the REV being handwritten it must be a highly specialized piece.
The chip here has a window through a small chip with several tiny wires is seen. Maybe it is a EEPROM, Electronically Erasable Programmable Read Only Memory. They were truly flashed to erase them, with a beam of, I think, UV light.