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Fuel Tank leak was it empty

 
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sidsel.svein(at)oslo.onli
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PostPosted: Wed Sep 05, 2007 10:44 am    Post subject: Fuel Tank leak was it empty Reply with quote

Ron, Alan,

I flushed my tank with salt water (to fascilitate removing swarf after
opening holes) and then with fuel before fitting the tank into the cockpit
module. Left the fuel (full tank) in for abt one week to check if any
pinhole leaks. Thereafter it was left empty/dry for about 3 1/2 years. I
now have 35 hours flight time and 45 landings (none hard - yet!). No
cracking of the tank, but it shows clear signs of bulging around the spacers
on the inside of the seat backs, which is a bit worrying although I
understand it is to be expected.

Best regards,
Svein
LN-SKJ

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alan(at)kestrel-insurance
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PostPosted: Thu Sep 06, 2007 1:18 am    Post subject: Fuel Tank leak was it empty Reply with quote

Hi Svein

I think they all seem to do that. It's very noticeable with the wings
removed when you peer into the "space", so I wouldn�t worry to much about
the swelling. If Ron is correct however, then I wouldn�t leave it empty for
any period of time from now on. Just my opinion.
Cheers

Alan

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karelvranken(at)hotmail.c
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PostPosted: Thu Sep 06, 2007 6:01 am    Post subject: Fuel Tank leak was it empty Reply with quote

Svein,
It was Nigel Charles who mentioned it for the first time already a couple of
years ago. He specified that the capacity raised by 6-7 liters but that is
up to every body in particular to remeasure the contents. I am also used to
keep it plenished to avoid eventual condensation. Anyway it is a point in my
checklist and easy for those who rig and derig for every flight, like I do.
Regards,
Karel Vranken.
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sidsel.svein(at)oslo.onli
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PostPosted: Thu Sep 06, 2007 9:35 am    Post subject: Fuel Tank leak was it empty Reply with quote

Thanks, Alan. I agree on not leaving the tank empty. Easy enough - fly
often!

Best regards,
Svein
do not archive

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sidsel.svein(at)oslo.onli
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PostPosted: Thu Sep 06, 2007 9:38 am    Post subject: Fuel Tank leak was it empty Reply with quote

Karel,

Interesting - will remember this for next year's annual (just completed this
year's) and then re-measure the quantity and re-calibrate the sight tube
volume marks.

Best regards,
Svein
do not archive

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hagargs(at)earthlink.net
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PostPosted: Thu Sep 06, 2007 8:28 pm    Post subject: Fuel Tank leak was it empty Reply with quote

I don't know if this is a continuation of my issue of my fuel tank crack
that I wrote about on the 16 th of August but the crack showed up after
refilling a tank that had been previously always kept full. My estimate is
that it was empty for about 5 or 6 weeks in a pretty hot AZ garage.
Probably over 100 F every day.

Steve
Quote:
[Original Message]
From: Alan Burrows <alan(at)kestrel-insurance.com>
To: <rparigor(at)suffolk.lib.ny.us>
Date: 9/5/2007 10:18:54 AM
Subject: RE: Fuel Tank leak was it empty


<alan(at)kestrel-insurance.com>

[quote]
Hi Ron

Yes my tank was emptied for the journey from UK to the U.S. in fact it was
empty for a period of about 2 months!
I wonder if its worth asking the community the same question about other
tank leaks, because its certainly information that should be shared if it
was the cause of my leak.
Has anyone else got a similar story?
Kind Regards

Alan

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alan(at)kestrel-insurance
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PostPosted: Fri Sep 07, 2007 12:03 am    Post subject: Fuel Tank leak was it empty Reply with quote

Hi Steve

It�s a continuation of a thread that you have joined having experienced
exactly the same problem that several of us have had. We are trying to
establish if the cause is leaving the tank empty for extended periods,
especially in hot conditions. Its starting to look like it is!

Alan

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rparigor(at)suffolk.lib.n
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PostPosted: Fri Sep 07, 2007 9:42 am    Post subject: Fuel Tank leak was it empty Reply with quote

Hi Alan

"We are trying to establish if the cause is leaving the tank empty for
extended periods, especially in hot conditions. Its starting to look like
it is!" (Cause of cracking)

Anyone out there have the Auxiliary fuel tank crack? I think it is
probably same material as the main tank, and perhaps more folk have had
them full, then left empty?

May be a combo of becoming brittle from drying out and trying to change
dimension while being somewhat stuck in place?

Ron Parigoris


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ptag.dev(at)tiscali.co.uk
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PostPosted: Fri Sep 07, 2007 2:25 pm    Post subject: Fuel Tank leak was it empty Reply with quote

Hi! Alan
G-PTAG tank was empty and therefore dry since Mat 28th 2006 with the a/c
in my centrally heated garage waiting for the engine. You guys have
scared the hell out of me since about a month ago I filled up and just
recently the filler hose became porous causing a massive leak which for
a couple of days made me think it was the tank ! However all is now good


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alan(at)kestrel-insurance
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PostPosted: Fri Sep 07, 2007 3:08 pm    Post subject: Fuel Tank leak was it empty Reply with quote

Hi Bob

You may be ok if the aircraft has been in a centrally heated environment,
because that doesn�t get too hot. I would however keep a very close eye on
it for the next couple of months. I would also suggest filling up after each
flight, as that�s the best way of checking for problems (max volume in the
tank). Hope yours is ok.
Cheers

Alan

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