It can't be hard, but it's not obvious
either. Any ideas ?

I had the same problem with mine during my owner-assisted annual last year.

You practically have to dislocate your wrist in order to maneuver the
screws/latches, etc. to remove it. I could not do it.

I finally got my A&P to do it. He, of course, smirked, reached in, (blind,
of course -- once your arm is in the access hole, you can't see the ELT) and
had the thing removed in seconds.

Putting it back in was even harder...

;-)
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"