Update: A chat with a retired inspector changed how I see old wiring diagrams

I was helping a guy at the hangar in Mobile sort through some old manuals for a 1982 Piper. He pointed at a faded schematic and said, 'See that dashed line? Back then, that meant a shielded run, not just any wire.' I'd been reading those diagrams wrong for ages, treating all dashed lines the same. It explains a noise issue I fought on a similar bird two months back. Has anyone else run into old notation like that giving them trouble?

3 comments

3 Comments

the_charles1mo ago

Wait, so @elizabethn56 knew this the whole time?

elizabethn561mo agoProlific Poster

Yep, that dashed line trap has bitten me too.

derekward1mo agoTop Commenter

Isn't that the kind of thing you only fall for once though?