I have a Piper Archer III and want to change the battery. The ELT is
an Artex 110-4. I can open the panel and found two thumbscrews which
only remove the cap of the ELT, I can also remove the BNC and Molex
connector. There are four screws on top, however these serve only to
open the ELT, exposing the circuit board, they do not allow it to be
removed from plane. However, I can't remove the ELT itself from the
plane to change the battery. It can't be hard, but it's not obvious
either. Any ideas ?