Aluminum Covers for Wing Tanks

[Pearson]

Thanks to supporting documents from Walter Whake, I was able to get a 337 approved by the Portland FSDO to replace the fabric over my wing tanks with sheet aluminum. If anyone is interested, I will be glad to share a copy. It is basically the same as what Walter did. My 337 just goes into more detail and has more drawings.

[1938BF50]

Re: Aluminum Covers for Wing Tanks

Richard,

Can you scan and load your 337 onto this site? I remember a section specifically for 337's. Perhaps another member can enlighten us as to where it resides. I am very interested in getting a copy of your 337. Mike Cushway, PO Box 51, Lake Mills, WI., 53551

[Hank Jarrett]

Re: Aluminum Covers for Wing Tanks

Removable covers over the wing tanks would sure make inspection of the spar roots easier after a wing tip bump. Might become a really popular mod!
Hank

[rcefird]

Re: Aluminum Covers for Wing Tanks

Walt also sent me his 337. I am almost finished with mine. It enabled me to get approval without any problem. Also, finished product looks real good and really makes opening and inspection easy. So here's a real SHOUT OUT TO WALTER--THANKS FOR TAKING THE TIME TO HELP OTHERS!!
Randy

[Pearson]

Re: Aluminum Covers for Wing Tanks

No doubt about it! Walter is "da man". I could not have gotten my approval without his drawings and 337 form. Thanks again Walter!

Attached are shrunk down versions of each page of the 337. There are a total of two pages for the form and five pages of drawings.

I could only attach 6 files to this message, so be sure to get the last one on the next message.

[Pearson]

Re: Aluminum Covers for Wing Tanks

Last of the files for the 337.

[N74DV]

Re: Aluminum Covers for Wing Tanks

what is the primary reason for this modification?

[Pearson]

Re: Aluminum Covers for Wing Tanks

If you ever have a leaky wing tank, it makes removal and reinstallation a LOT easier. Also you can do the wing spar inspection at annual a lot easier.

I have created a zip file with each page of the 337. If someone wants a copy of it, PM me with your email address and I'll send it to you. Unfortunately it is just slightly to large to post on this site. It is 1.21MB.

[Robert Lees]

Re: Aluminum Covers for Wing Tanks

These are now loaded on to the Technical resources page of the Foundation website (scroll down to the 337 section)

[jdoran]

Re: Aluminum Covers for Wing Tanks

Richard,

Could you or Walt post some photos of the covers installed on the plane?

It's a great idea, I'm curious what it looks like.

[Pearson]

Re: Aluminum Covers for Wing Tanks

I will take the camera with me next time I go to the airport. May be a couple of days.

Also, thanks to Rob Lees, the file with the 337 is posted on the Technical Resources page of the Foundations website.

[Pearson]

Re: Aluminum Covers for Wing Tanks

OK, I went to the airport yesterday with camera in hand. Attached are the requested photos.