![]() |
If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
|
#1
|
|||
|
|||
![]()
Some years ago I repaired a Pawnee that had a similar steel plate on
the front spar. Because of the steel on aluminum, there was extensive corrosion between and the aluminum rivets were soft enough you could pick off the heads of the #6 rivets with your finger nail. From the looks of the photo, there is lots of rust, meaning water. Aluminum + steel + water = battery = corrosion. If it were mine, I'd take it apart and look to see what is going on. If the aluminum is corroded under the steel, you could get cracks under normal loads. Don A&P - IA Posted Via Usenet.com Premium Usenet Newsgroup Services ---------------------------------------------------------- ** SPEED ** RETENTION ** COMPLETION ** ANONYMITY ** ---------------------------------------------------------- http://www.usenet.com |
#2
|
|||
|
|||
![]()
On Sun, 10 Apr 2005 12:05:52 -0500, Don Hammer wrote:
Some years ago I repaired a Pawnee that had a similar steel plate on the front spar. Because of the steel on aluminum, there was extensive corrosion between and the aluminum rivets were soft enough you could pick off the heads of the #6 rivets with your finger nail. From the looks of the photo, there is lots of rust, meaning water. Aluminum + steel + water = battery = corrosion. If it were mine, I'd take it apart and look to see what is going on. If the aluminum is corroded under the steel, you could get cracks under normal loads. Don A&P - IA Don, We've looked at it pretty closely. There is no corrosion involved. And no sign of water infiltration. That was pretty clear from the thick layer of dry dust all over the surrounding area -- I should post another picture after vacumming the area out. And worse yet, there are two cherry-rivets in the damaged area (you can see one of them in the picture). That means that after the damage - some "maintainer" bent the metal brace back down and stuck a couple of cherry-rivets in it. Nope, he didn't bother to follow 43.13 and repair it properly -- he just did a half-assed sorta-fix. And of course -- he didn't make any mention of it in the logs. Now -- it looks like I get to pay a DRE for a repair plan, probably cut that brace a few inches away, get a replacement plate fashioned, and splice it in. And probably pay a ton for a IA to do a bunch of dye-penatrant testing while we're at it to insure there was no other damage. The thing that really ticks me off is I paid to have a prebuy/annual done before purchasing the aircraft. With all this expense on a pre-existing condition that should have been identified (we spotted it FIRST time we looked under the back seat) -- I'm going back after the IA who did the prebuy/annual. He's either going to help pay for this repair -- or he can answer questions from the FAA. Chuck |
Thread Tools | |
Display Modes | |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
National Cherokee Pilots Association Fly-In PIREP | Jay Honeck | Piloting | 2 | June 21st 04 04:02 PM |
CHEROKEE NATIONAL FLY-IN & CONVENTION - THIS MONTH! | Don | Piloting | 0 | June 3rd 04 05:06 AM |
Cherokee National Fly-In & Convention - THIS MONTH | Don | General Aviation | 0 | June 3rd 04 05:01 AM |
Cherokee National Fly-In & Convention | Don | Owning | 0 | May 5th 04 08:13 PM |
Cherokee National Fly-In & Convention | Don | General Aviation | 0 | May 5th 04 08:12 PM |