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Tundra10
Joined: 14 Jun 2010 Posts: 102 Location: Scarborough, Ontario
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Posted: Tue May 08, 2018 7:56 am Post subject: Authority to solder splice a wire |
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AeroElectic Wizards:
I replaced the coiled wired that connects the push to talk switch on
the yoke of my Cessna 172.
This meant splicing the coiled wire with the regular wire that runs
behind the instrument panel to the intercom.
I twisted and soldered the wires and covered them with heat shrink.
The log book entry needs to read something like:
Push to talk wiring replaced, using AC4313-1B section X-XX as a guide.
I cannot find any section that discussed splicing wires in this manner !
Does someone have a reference within an authoritative document that I
can cite indicating this is an acceptable method of repair ?
Thanks !
Jeff Page
Dream Aircraft Tundra #10
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nuckolls.bob(at)aeroelect Guest
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Posted: Tue May 08, 2018 12:58 pm Post subject: Authority to solder splice a wire |
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At 10:55 AM 5/8/2018, you wrote:
Quote: | --> AeroElectric-List message posted by: Jeff Page <jpx(at)qenesis.com>
AeroElectic Wizards:
I replaced the coiled wired that connects the push to talk switch on
the yoke of my Cessna 172.
This meant splicing the coiled wire with the regular wire that runs
behind the instrument panel to the intercom.
I twisted and soldered the wires and covered them with heat shrink.
The log book entry needs to read something like:
Push to talk wiring replaced, using AC4313-1B section X-XX as a guide. |
There are many maintenance and/or repair activities that
don't necessarily need to be logged. The actions you described
have no safety implications. If carried out with good craftsmanship,
I wouldn't bother to record it.
Bob . . .
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Tundra10
Joined: 14 Jun 2010 Posts: 102 Location: Scarborough, Ontario
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Posted: Tue May 08, 2018 11:02 pm Post subject: Authority to solder splice a wire |
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Bob,
In Canada, most shops log pretty much everything, and the shop signing
off the annual plans to include the intercom wiring repair in the list
of things accomplished. I am happy they let me do the work and just
inspect it, since that saves me a lot of $$$.
As much as anything, I am surprised that there is no mention of
splicing a wire with solder and shrink wrap in AC4313-1B. It is
commonly done, so it must be blessed by the government somewhere ?
Thanks,
Jeff
Quote: | Time: 01:58:27 PM PST US
From: "Robert L. Nuckolls, III" <nuckolls.bob(at)aeroelectric.com>
Subject: Re: Authority to solder splice a wire
At 10:55 AM 5/8/2018, you wrote:
>
> AeroElectic Wizards:
>
> I replaced the coiled wired that connects the push to talk switch on
> the yoke of my Cessna 172.
> This meant splicing the coiled wire with the regular wire that runs
> behind the instrument panel to the intercom.
>
> I twisted and soldered the wires and covered them with heat shrink.
>
> The log book entry needs to read something like:
> Push to talk wiring replaced, using AC4313-1B section X-XX as a guide.
There are many maintenance and/or repair activities that
don't necessarily need to be logged. The actions you described
have no safety implications. If carried out with good craftsmanship,
I wouldn't bother to record it.
Bob . . .
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nuckolls.bob(at)aeroelect Guest
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Posted: Wed May 09, 2018 8:05 am Post subject: Authority to solder splice a wire |
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At 02:00 AM 5/9/2018, you wrote:
Quote: | --> AeroElectric-List message posted by: Jeff Page <jpx(at)qenesis.com>
Bob,
In Canada, most shops log pretty much everything, and the shop signing
off the annual plans to include the intercom wiring repair in the list
of things accomplished. I am happy they let me do the work and just
inspect it, since that saves me a lot of $$$.
As much as anything, I am surprised that there is no mention of
splicing a wire with solder and shrink wrap in AC4313-1B. It is
commonly done, so it must be blessed by the government somewhere ? |
They haven't gotten around to that yet . . . but
probably will. When not specifically covered in AC43-13
it may suffice to say, "Spliced and insulated wires per
shop practice."
Bob . . .
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alec(at)alecmyers.com Guest
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Posted: Wed May 09, 2018 8:05 am Post subject: Authority to solder splice a wire |
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Jeff
Refer to paragraph 19.4 of NASA technical standard NASA-STD 8739.4A, “WORKMANSHIP STANDARD FOR CRIMPING, INTERCONNECTING CABLES, HARNESSES, AND WIRING”
That should be acceptable to the Minister.
On May 9, 2018, at 03:00, Jeff Page <jpx(at)qenesis.com> wrote:
Bob,
In Canada, most shops log pretty much everything, and the shop signing off the annual plans to include the intercom wiring repair in the list of things accomplished. I am happy they let me do the work and just inspect it, since that saves me a lot of $$$.
As much as anything, I am surprised that there is no mention of splicing a wire with solder and shrink wrap in AC4313-1B. It is commonly done, so it must be blessed by the government somewhere ?
Thanks,
Jeff
Quote: | Time: 01:58:27 PM PST US
From: "Robert L. Nuckolls, III" <nuckolls.bob(at)aeroelectric.com>
Subject: Re: Authority to solder splice a wire
At 10:55 AM 5/8/2018, you wrote:
>
> AeroElectic Wizards:
>
> I replaced the coiled wired that connects the push to talk switch on
> the yoke of my Cessna 172.
> This meant splicing the coiled wire with the regular wire that runs
> behind the instrument panel to the intercom.
>
> I twisted and soldered the wires and covered them with heat shrink.
>
> The log book entry needs to read something like:
> Push to talk wiring replaced, using AC4313-1B section X-XX as a guide.
There are many maintenance and/or repair activities that
don't necessarily need to be logged. The actions you described
have no safety implications. If carried out with good craftsmanship,
I wouldn't bother to record it.
Bob . . .
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Tundra10
Joined: 14 Jun 2010 Posts: 102 Location: Scarborough, Ontario
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Posted: Wed May 09, 2018 10:57 pm Post subject: Authority to solder splice a wire |
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Thanks Alec. I knew it had to be documented as acceptable somewhere !
Jeff
DO NOT ARCHIVE
Quote: | Time: 09:05:39 AM PST US
From: Alec Myers <alec(at)alecmyers.com>
Subject: Re: Re: Authority to solder splice a wire
Jeff
Refer to paragraph 19.4 of NASA technical standard NASA-STD 8739.4A,
WORKMANSHIP
STANDARD FOR CRIMPING, INTERCONNECTING CABLES, HARNESSES, AND WIRING
That should be acceptable to the Minister.
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rampil
Joined: 04 May 2007 Posts: 870
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trigo(at)mail.telepac.pt Guest
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Posted: Sat May 12, 2018 12:37 am Post subject: Authority to solder splice a wire |
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Ira
I agree with you, I think shrink wrap was invented only after AC43.13 was published ...
Carlos
Enviado do meu iPhone
No dia 11/05/2018, às 21:22, rampil <ira.rampil(at)gmail.com> escreveu:
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Kellym
Joined: 10 Jan 2006 Posts: 1700 Location: Sun Lakes AZ
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Posted: Sat May 12, 2018 5:34 am Post subject: Authority to solder splice a wire |
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You might be correct about the original version of AC 43-13-1.
However, the current version AC 43-13-1B was published Sept 1998, with
change 1 issued Sept 2001. Most of the editing was done a few years
earlier. I can recall using heat shrink tubing in the early 80's and
probably before that. AC 43-13-2B (alterations) was issued even more
recently. Those dates straight from the cover of my desk reference copy.
Kelly
On 5/12/2018 1:34 AM, Carlos Trigo wrote:
Quote: |
Ira
I agree with you, I think shrink wrap was invented only after AC43.13 was published ...
Carlos
Enviado do meu iPhone
No dia 11/05/2018, às 21:22, rampil <ira.rampil(at)gmail.com> escreveu:
>
>
> I don't think shrink wrap was invented when AC43.13 was written
>
> --------
> Ira N224XS
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_________________ Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
KCHD |
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rampil
Joined: 04 May 2007 Posts: 870
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Posted: Sat May 12, 2018 5:45 am Post subject: Re: Authority to solder splice a wire |
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------> Kelly <-----
I was tongue in cheek.
Yes, the old dinosaur has been revised from time to time,
even as recently as almost 20 years ago. In spirit, though
it is still an antique. How many decades do you suppose it
will be before it covers fiber-optics, mechatronics, point-of sensing
transducers, etc?
I suppose it fits the crowd. Most of the guys I restore antique/classic
aircraft with still prefer cartridge fuses rather than switchable
circuit breakers.
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_________________ Ira N224XS |
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art(at)zemon.name Guest
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Posted: Sat May 12, 2018 5:56 am Post subject: Authority to solder splice a wire |
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OK... I had to go look it up. Heat-shrink tubing was invented by Raychem Corporation in 1962. See https://en.wikipedia.org/wiki/Heat-shrink_tubing
Cheers,
-- Art Z.
--
https://CheerfulCurmudgeon.com/"If I am not for myself, who is for me? And if I am only for myself, what am I? And if not now, when?" Hillel
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echristley(at)att.net Guest
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Posted: Sat May 12, 2018 8:22 am Post subject: Authority to solder splice a wire |
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Just out of curiosity, is there a way to get a diff of what changed in the current version of AC43-13?
We always here that its a document written in the blood of others mistakes. It would be telling to know what new "mistakes" were incorporated, as well as knowing what new materials and techniques the FAA considers acceptable.
On Saturday, May 12, 2018 9:57 AM, Art Zemon <art(at)zemon.name> wrote:
OK... I had to go look it up. Heat-shrink tubing was invented by Raychem Corporation in 1962. See https://en.wikipedia.org/wiki/Heat-shrink_tubing
Cheers,
-- Art Z.
--
https://CheerfulCurmudgeon.com/"If I am not for myself, who is for me? And if I am only for myself, what am I? And if not now, when?" Hillel
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Eric Page
Joined: 15 Feb 2017 Posts: 243
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Posted: Sat May 12, 2018 9:06 am Post subject: Re: Authority to solder splice a wire |
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echristley(at)att.net wrote: | Just out of curiosity, is there a way to get a diff of what changed in the current version of AC43-13? |
Look for a black vertical bar in the left margin. It indicates that the text beside it has been changed from the last revision. This obviously doesn’t provide a comparison with the superseded text, but if you have the old version as well, it shows where to compare.
Eric
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nuckolls.bob(at)aeroelect Guest
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Posted: Sun May 13, 2018 5:17 am Post subject: Authority to solder splice a wire |
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At 11:20 AM 5/12/2018, you wrote:
Quote: | Just out of curiosity, is there a way to get a diff of what changed in the current version of AC43-13?
We always here that its a document written in the blood of others mistakes. It would be telling to know what new "mistakes" were incorporated, as well as knowing what new materials and techniques the FAA considers acceptable.
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That was an interesting revision process . . . AC43-13 had
not been substantially revised in decades. When keepers
of the flame were about to release the latest upgrade, they
sent a copy to the technical services guru at EAA . . . his
name escapes me at the moment . . . and asked if EAA members
could review the document and offer advice on "typos and
syntax, etc. By the way, we need your input in about a week."
I received a copy of chapter 11. Other chapters were sent
to various subject matter experts in EAA. I think I spent
4-5 late night sessions on the keyboard and managed to get
my contributions, about a dozen pages of comments, in under
the wire. I've got a copy of the EAA submission around here
somewhere . . . I'll have to dig a bit.
In any case, the total suggestion package was substantial. The
target for releasing the revision was pushed back several
months . . . almost a year I think. When it finally did get
released, most of what EAA submitted was incorporated into
the document . . . but a few new toe-stubbers were added as
well (sigh) . . . nevertheless, it was a gratifying experience.
Bob . . .
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