Recommended Modifications/Repairs for 170 Owners

How to keep the Cessna 170 flying and airworthy.

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marktoula1
Posts: 29
Joined: Sat Dec 03, 2022 1:07 am

Re: Recommended Modifications/Repairs for 170 Owners

Post by marktoula1 »

Where can I get more information on the inspection hole in item 7, and also information on how to and where to get the handle in item9?

Thanks for the help.
Arthur
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dstates
Posts: 477
Joined: Sun Jun 30, 2019 5:50 pm

Re: Recommended Modifications/Repairs for 170 Owners

Post by dstates »

marktoula1 wrote:Where can I get more information on the inspection hole in item 7, and also information on how to and where to get the handle in item9?

Thanks for the help.
Arthur
Tail pull handles:
https://basinc-aeromod.com/tail_pull_handles.php
N1235D - 1951 170A - SN: 20118
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gobrien
Posts: 113
Joined: Sun May 19, 2019 11:36 am

Re: Recommended Modifications/Repairs for 170 Owners

Post by gobrien »

Hi Arthur,

The tail pull handles are IMO required equipment! I couldn't manage without them; and don't need a tailwheel truck/tug as a result of having them. Don't install it until you are sure you're finished crawling down the back as it is difficult to reach/crawl past.

Inspection hole:

Here is the link to the structural repair manual: viewtopic.php?f=41&t=15456&p=143644&hil ... l+#p143644
You want page 123 of the PDF which shows the S1443-1 doubler you need to acquire or fabricate to support the inspection hole. https://www.ebay.com/itm/203928462652

The attached image is from page 32 (page 70 of the PDF) of the 170B Illustrated Parts Catalogue. It is not particularly clear, but the key thing is to ensure the hole is offset from the centreline (or it will be covered by the v-stab) but do not impinge on the longerons, i.e. stay on the top skin and "far enough" from the edge. On a 170B I looked at it is as close as possible to the v-stab without going (much) under so you're in the flatter part of the skin. I regret not installing this - it would have made for a lot less crawling down the back of the fuselage.

Regards,

Gareth.
Attachments
image135.png
1948 170 Project (N4180V) now EI-AEN SN:18513 - Dublin, Ireland
https://www.taildragger.eu/
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