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graeme bird
Joined: 15 Jul 2010
Posts: 434
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 Posted: Thu Jan 10, 2019 3:22 am Post subject: tailplane soft foam picture LAA mag UK |
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Not sure what to make of the pic page 49 of the LAA mag Jan 2019, showing a tailplane with the skin removed in 6 big rectangles completely trashing it and saying that something has made the foam go soft and spongy.
Lots of that foam around uncared for and its still as it ever was. It mentions contamination but how on the leading edge? I think I would have explored some other ways like small holes and expanding foam.
I guess the only way in is via the tube and something ominous has been used to clean/lubricate it and its run down the inside to the leading edge. Maybe it was condensation/water logging then ice?
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_________________
Graeme Bird
kit4 (Wagstaff) TBD
Kit3 G-CLXU (Gregory) mono 914 xs Woodcomp
Kit2 G-PATS - (kesterton) Mono Classic 912 warpdrive
Kit 1 G-UMPY - Mono Classic/XS 912S, Woodcomp G(@)gdbmk.co.uk |
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peterz(at)zutrasoft.com
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| Posted: Thu Jan 10, 2019 4:48 am Post subject: tailplane soft foam picture LAA mag UK |
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Holy-moly! what could have happened there? Protected from sunlight, the blue foam does not degrade without some reacting chemical involved (like acetone etc).
Curiosity from this side of the pond: Are there other LAA europa articles I am missing out on? Is there an LAA back-issue list of Europa articles?
Thx,
Pete
On Thu, Jan 10, 2019 at 6:29 AM graeme bird <graeme(at)gdbmk.co.uk (graeme(at)gdbmk.co.uk)> wrote:
| Quote: | --> Europa-List message posted by: "graeme bird" <graeme(at)gdbmk.co.uk (graeme(at)gdbmk.co.uk)>
Not sure what to make of the pic page 49 of the LAA mag Jan 2019, showing a tailplane with the skin removed in 6 big rectangles completely trashing it and saying that something has made the foam go soft and spongy.
Lots of that foam around uncared for and its still as it ever was. It mentions contamination but how on the leading edge? I think I would have explored some other ways like small holes and expanding foam.
I guess the only way in is via the tube and something ominous has been used to clean/lubricate it and its run down the inside to the leading edge. Maybe it was condensation/water logging then ice?
--------
Graeme Bird
G-UMPY - Mono Classic/XS FFW 912S, Woodcomp SR3000/3W CS, trutrak Gemini 2 axis AP, PAW, PFLARM core, ads-b out, 8.33khz, mode S, FP-5, Aera500, SD on Nexus, Smart A3
350 hours & 6 years on the Mono, 930 total
g(at)gdbmk.co.uk
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Hitchflight
Joined: 22 Feb 2018
Posts: 94
Location: Derbyshire, England
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| Posted: Fri Jan 11, 2019 12:52 am Post subject: Re: tailplane soft foam picture LAA mag UK |
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Peter
Good to hear from you in Canada.
The Europa Club is a member club of the LAA. The LAA publish the Light Aviation magazine.
The Europa Club publish the Europa Flyer magazine including safety related matters. You should be getting your copy in Canada in the coming weeks.
Malcom McBride writes great articles in the Light Aviation magazine on engineering and investigations issues each month. These feature all aircraft types.
The LAA take a proactive view on safety and kindly make available these Safety Spot articles online. The articles usually appear just after the monthly magazine is released. This free service is available here http://www.lightaircraftassociation.co.uk/engineering/SafetySpot.html
At the time of writing, the Dec2018 is the last posting. The picture appears in the Jan 2019 issue of Light Aviation magazine.
I will write to the LAA to request a high definition copy of the picture. Then release on our website as a News item shortly.
https://www.theeuropaclub.org/news
Trust that helps.
Regards
Bob
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grahamsingleton(at)btinte
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| Posted: Fri Jan 11, 2019 1:47 am Post subject: tailplane soft foam picture LAA mag UK |
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My first impression of the photo is that its possible someone cleaned the grease of the bearing tubes with gasolene or avgas, that would dissolve the blue foam.
There would be evidence for that in the form of a blue “lacquering” effect of the dissclved styorofoam. The solvent would not evaporate quickly because its
almost fully enclosed. It would hang around and do a lot more damage.
Graham
| Quote: | On 11 Jan 2019, at 08:52, Hitchflight <bobhitchcock(at)icloud.com> wrote:
Peter
Good to hear from you in Canada.
The Europa Club is a member club of the LAA. The LAA publish the Light Aviation magazine.
The Europa Club publish the Europa Flyer magazine including safety related matters. You should be getting your copy in Canada in the coming weeks.
Malcom McBride writes great articles in the Light Aviation magazine on engineering and investigations issues each month. These feature all aircraft types.
The LAA take a proactive view on safety and kindly make available these Safety Spot articles online. The articles usually appear just after the monthly magazine is released. This free service is available here http://www.lightaircraftassociation.co.uk/engineering/SafetySpot.html
At the time of writing, the Dec2018 is the last posting. The picture appears in the Jan 2019 issue of Light Aviation magazine.
I will write to the LAA to request a high definition copy of the picture. Then release on our website as a News item shortly.
https://www.theeuropaclub.org/news
Trust that helps.
Regards
Bob
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