111V-B

https:// www3.panasonic.biz/ac/e/search_num/index.jsp?c=detail&part_no=CY-111VB

This is a photoelectric sensor.

https:// patents.google.com/patent/US6578794

This is a patent describing the use of photoelectric sensors for overspeed protection of fadec controlled engines.

I'm not an expert on jet engines or fadec, but this seems like a vulnerability or vector for what happened to flight 1380. (Laser pointer? Something much stronger?)