Originally Posted by colcreate
Soldering was once an accepted method of connecting cables in aircraft, there was a standard written for it and training for it's correct implementation.
I'm long since removed from that industry but was surprised to learn that what was once considered best practice is now (6 years ago) considered illegal. Who, when and why?
Likely the same reason the ABYC (American Boat and Yacht Council?) has gone against it: Soldering creates a "hard" spot in the wiring that tends to focus any flex on the adjacent section of wire. Under vibration, those areas tend to fail.
Personally, I don't see a whole lot of difference between the hardening from soldering, or the hardening from crimping a connector on, but that's what they suggest.