Notifications

Clear all

This Forum is a place for Piper Comanche pilots to communicate and discuss technical issues

If you join or reset a password, please check your Spam Email box for emails from Admin at ComancheTechTalk.com

Please put your questions on the forum as well so everyone can read and respond. Someone else might be having similar questions.

All questions or topics on the Forums automatically get sent to the Tech team as well.

Pockets of filiform corrosion

Comanche Airframes

Last Post by ICS archives 2008-2018 5 years ago

1 Posts

1 Users

0 Reactions

229 Views

RSS

ICS archives 2008-2018

Admin

Joined: 5 years ago

Posts: 1162

Topic starter 06/05/2020 3:17 pm

Pockets of filiform corrosion

by Jeff Holzaepfel » Fri Apr 07, 2017 6:48 pm

I am looking at PA-30's for a purchase. I have not had to deal with 50 year old planes before, and I'm finding that sitting in one - even a very nice one - feels a lot like sitting in my brother in law's restored GTO. I'm also finding that corrosion is an issue in places.

Here are three pics of the worst examples I've seen. Is this something to be overly concerned with? I'm hearing that it is treatable with sanding, zinc chromating, and patch painting.

I'd rather buy a plane that has not been freshly painted so I can see beneath the surface like this much better. Any thoughts or guidance would be appreciated.

Jeff

Attachments

Jeff Holzaepfel

Posts: 4

Joined: Wed Mar 22, 2017 11:36 pm

Top

Re: Pockets of filiform corrosion

by LeWayne Garrison » Mon Apr 10, 2017 8:11 pm

Difficult to evaluate from photos. Some of this may be a bad paint job, but some definitely looks like corrosion. If caught early like these pictures indicate, not difficult to remove, but does entail polishing out the corrosion and chromating and repainting. Trick is to make sure you find all of it. Most unseen areas of Comanches are safe due to Piper's use of zinc chromate.

LeWayne Garrison: Posts: 73; Joined: Tue Aug 16, 2011 3:37 am

Quote

26 Forums
1,397 Topics
1,718 Posts
1 Online
337 Members

Forum Icons: Forum contains no unread posts Forum contains unread posts

Topic Icons: Not Replied Replied Active Hot Sticky Unapproved Solved Private Closed