Insulation/Sound deadener

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8342
Posts: 293
Joined: Sun Oct 14, 2018 11:55 pm
Location: KUSE Wauseon OH
Name: Rick F
Aircraft Type: C-140 (sold)
Occupation-Interests: Captain B-777 (Retired)
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Insulation/Sound deadener

Post by 8342 »

I am doing the Annual Inspection on my 140 and have found fiberglass insulation behind the cabin panels.

It is not in good shape and looking through the IPC I cannot find any listed.

Is it something that has been added over the years or am I not looking in the right place?

Is it legal?

Is there a source for replacement?

Any information or suggestions would be helpful.

Thanks,

Rick
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6643
Posts: 2326
Joined: Tue May 01, 2018 7:00 am
Location: KLCI
Name: John C
Aircraft Type: 1946 C140/C90
Occupation-Interests: A&P, semi-retired
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Re: Insulation/Sound deadener

Post by 6643 »

Get it out of there. It will hold moisture against the aluminum skin. Clean any corrosion that may have developed and prime the metal. Install closed cell vinyl-nitride foam in its place. It's available from places like Aircraft Spruce and is approved.
8342
Posts: 293
Joined: Sun Oct 14, 2018 11:55 pm
Location: KUSE Wauseon OH
Name: Rick F
Aircraft Type: C-140 (sold)
Occupation-Interests: Captain B-777 (Retired)
Contact:

Re: Insulation/Sound deadener

Post by 8342 »

Thanks John.

It didn't look right when I saw it.

Thankfully it was covered with cellophane to prevent moisture problems.

It is all coming out anyway.

Rick
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