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  #1  
Old 02-09-2020, 08:56 PM
Steve Melton's Avatar
Steve Melton Steve Melton is online now
 
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Location: Cincinnati, OH
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Default fuel line - severe abrasion

a second owner aircraft. previous A&P inspection. flying for a couple of years. owner inspection found severe fuel injected fuel line wear abrasion. in true honesty, perhaps the best inspector is the guy behind the stick. not much time left for this hose.



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Cincinnati, OH
RV-9A, Tip-up, Superior O-320, roller lifters, 160HP, WW 200RV, dual impulse slick mags, oil pressure = 65 psi, EGT = 1300F, flight hours = 900+ for all

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Last edited by Steve Melton : 02-09-2020 at 09:14 PM.
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  #2  
Old 02-09-2020, 09:26 PM
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AlexPeterson AlexPeterson is offline
 
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Location: Ottertail, MN
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Quote:
Originally Posted by Steve Melton View Post
a second owner aircraft. previous A&P inspection. flying for a couple of years. owner inspection found severe fuel injected fuel line wear abrasion. in true honesty, perhaps the best inspector is the guy behind the stick. not much time left for this hose.



Wow, good catch. What was chowing on it? Should one perhaps replace the fitting this was attached to also?
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  #3  
Old 02-10-2020, 08:31 AM
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RV7 To Go RV7 To Go is offline
 
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OMG...that looks like it was ground out by by a Dremel/die grinder for clearance. What did the other part look like? That just goes to show you can never have too many eyes checking out your plane!
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  #4  
Old 02-10-2020, 03:09 PM
TS Flightlines TS Flightlines is offline
 
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And the plated brass crimp collar and JIC nut. Definately not a good thing, and was overlooked apparently several times.

Tom
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Tom Swearengen, TS Flightlines LLC, AS Flightlines
Joint Venture with Aircraft Specialty
Teflon Hose Assemblies for Experimentals
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  #5  
Old 02-10-2020, 03:28 PM
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Steve Melton Steve Melton is online now
 
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Quote:
Originally Posted by TS Flightlines View Post
And the plated brass crimp collar and JIC nut. Definately not a good thing, and was overlooked apparently several times.

Tom
the expert is in the house.
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Steve Melton
Cincinnati, OH
RV-9A, Tip-up, Superior O-320, roller lifters, 160HP, WW 200RV, dual impulse slick mags, oil pressure = 65 psi, EGT = 1300F, flight hours = 900+ for all

Simplicity is the art in design.
I was born an airplane nut. I have no explanation for it.
My Artwork is freely given and published and cannot be patented.
www.rvplasticparts.com
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  #6  
Old 02-10-2020, 03:31 PM
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Bob Martin Bob Martin is offline
 
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Steve,
You said fuel ingection line...
I am guessing it was close the spider....and maybe rubbing on the engine split line? Only area where I can think a line would be close enough to rub.
Give us a hint so we can check our planes.
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  #7  
Old 02-10-2020, 03:35 PM
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Steve Melton Steve Melton is online now
 
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correction, fuel pressure line to the transducer on a fuel injected engine. pilot side down low.
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Steve Melton
Cincinnati, OH
RV-9A, Tip-up, Superior O-320, roller lifters, 160HP, WW 200RV, dual impulse slick mags, oil pressure = 65 psi, EGT = 1300F, flight hours = 900+ for all

Simplicity is the art in design.
I was born an airplane nut. I have no explanation for it.
My Artwork is freely given and published and cannot be patented.
www.rvplasticparts.com
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  #8  
Old 02-10-2020, 05:19 PM
rockwoodrv9 rockwoodrv9 is offline
 
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That looks pretty close to a very bad flight. A good reminder to inspect all the fuel hoses very carefully at least yearly.
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  #9  
Old 02-10-2020, 05:22 PM
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Steve Melton Steve Melton is online now
 
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Quote:
Originally Posted by rockwoodrv9 View Post
That looks pretty close to a very bad flight. A good reminder to inspect all the fuel hoses very carefully at least yearly.
directly above the exhaust pipe. this guy must be living right.
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Steve Melton
Cincinnati, OH
RV-9A, Tip-up, Superior O-320, roller lifters, 160HP, WW 200RV, dual impulse slick mags, oil pressure = 65 psi, EGT = 1300F, flight hours = 900+ for all

Simplicity is the art in design.
I was born an airplane nut. I have no explanation for it.
My Artwork is freely given and published and cannot be patented.
www.rvplasticparts.com
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  #10  
Old 02-10-2020, 10:26 PM
dreed dreed is offline
 
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Oof... good catch- scary stuff.

This brings back memories. My former 1961 172 had someone route the R/H rudder cables under the fuel line upstream of the fuel selector (where the R/H wing feeds the selector)- sawed through the AL tubing so much that it was paper thin. So thin that if you looked down the ID of the tube, it was no longer round and had a very pronounced protrusion inward.

We cut it out, re-flared it and fixed the cable routing but like the posted the fuel would have been in the bulkhead right behind the exhaust with no way to shut it off.

I found this on my own during an assisted annual, but it had several previously at the same shop unassisted. Like RV-7 to go said, the more eyes the better.
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Last edited by dreed : 02-10-2020 at 10:34 PM.
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