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Seen in the field: Wire Patina Near Braided Hose

DeltaRomeo

DeltaRomeo

doug reeves: unfluencer
Staff member
Seen on an 8A that is flown a LOT in my neck of the woods. Like every day for the past ten years. Just letting you see some things to look for. And this might be something they’ve been monitoring for the last five years. Not saying it’s excessive wear but it’s a patina that eventually shows.

Plane currently in for annual.
v/r,dr

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My biggest hate. Zip ties. If they don't cause problems, they break and stop doing their job.
 
I'd understand this if someone pointed out the wrong.
I see some wear, perhaps time to replace.
I wonder about separation with adel clamps.
 
wirejock said:
My biggest hate. Zip ties. If they don't cause problems, they break and stop doing their job.
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Jonnyb said:
Most modern airliners are full of them.
And didn't NASA use them on the Space Shuttle?
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I'm wondering if bad vs good is just a question of material. I have a bunch of ETFE/Tefzel zip ties and they strike me as much less brittle than nylon. Add to that the other benefits like chemical resistance, and that they are self-extinguishing when burned, and they seem nice for aircraft use if used neatly.
 
Looks more like spark plug leads instead of hose...You can see copper under the silver in places and there is green corrosion too. if it's really hose then it's bad juju using hose to hold or locate electrical stuff.
 
skirting_virga said:
I'm wondering if bad vs good is just a question of material. I have a bunch of ETFE/Tefzel zip ties and they strike me as much less brittle than nylon. Add to that the other benefits like chemical resistance, and that they are self-extinguishing when burned, and they seem nice for aircraft use if used neatly.
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They are fine. It's just my peeve.
Kinda like those plastic things auto companies use to hold parts. TThy are all different. They break when removed and good luck finding them at a parts store. Why not standardize? Imagine how much could be saved if auto manufacturers would standardize on as much as possible. Engineers. Sorry. No offense. I'll get off my soap box and reach for the Koroseal-lacing.
 
wirejock said:
Kinda like those plastic things auto companies use to hold parts. TThy are all different. They break when removed and good luck finding them at a parts store. Why not standardize? Imagine how much could be saved if auto manufacturers would standardize on as much as possible. Engineers. Sorry. No offense. I'll get off my soap box and reach for the Koroseal-lacing.
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Auto manufacturers would have to commit to making things that are repairable first. Modern things seem designed to be assembled once and never serviced.
 
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Small piece of tubing as a stand off gives better spacing between the leads and wires and eliminates one tie wrap per….
I’ll bet the wires clean right up…..
I am sure we have all seen much worse.
 
JonJay said:
Small piece of tubing as a stand off gives better spacing between the leads and wires and eliminates one tie wrap per….
I’ll bet the wires clean right up…..
I am sure we have all seen much worse.
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Appears to be 701 style hose with a rubber liner. Should have a separator between the hoses---and not allow any contact.
 
JonJay said:
Looks like ignition leads to me, but your eyes are way more experienced!
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Those braided jackets are definitely the Slick ignition leads. The evidence is the small OD (zip-ties provide a good reference), the peeling and flaking clear silicone rubber coating, and the visible copper where the tinning is worn off.

Skylor
 
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