More Research on "The great center strap debate"

[mshac]

The post above, being the new member's first, seems to have a very strong interest in having the $600 STC fee paid. Is this account the STC Holder's sockpuppet? Very suspect as a first post. No introduction, no "about me", just "PAY THE MONEY"...

Most owners don't make the decision so publicly regarding what is essentially a note from the doctor explaining why you missed school. Am I wrong to say there is no structural modification to the airplane other than not reinstalling the center strap?

Reminds me of the Peterson/EAA autogas STC stickers. $1 per hp for a sticker that makes it legal to run mogas in your airplane. No changes to the airplane whatsoever. I know a lot of folks who are "sticklers" about paying for the sticker, and many others who don't give a rats **s. Never heard of anyone getting in trouble for it. Doubt highly anyone would care much about the center strap STC either, except the STC holder!

[Pushpull5785]

Actually been a member and lurked for years. I’m just curious about this as I’m doing my windows here shortly.

I did say that if you find an IA willing to sign it off without the STC then go for it.

I personally would rather pay the $600 (maybe because my IA will not install the windshield without either reinstalling the center post or obtaining the STC… in his words, if I take it off, it goes back on. If not there better be paperwork) that being said Im still not sure which way I’ll go as I do not necessarily mind the center post and it saves me from getting a new compass… which would cost me more money.

Also Id assume RTAerospace has an account on here don't they? Has anyone reached out to them?

[Jhogan0101]

Here is a photo of a 337B that was for sale jan/2021
Looks like he did without posts or plates.
Was it legal? idk.
I do remember reading somewhere the concern was that the windshield would/could pop out during flight.
but i think OEM wind shields were 1/8” thick at the time but now they are available in 1/4” and less likely to come out.


https://ibb.co/Fb85GrD

[GAdams]

It sure does make the old girl look pretty good.

[kbecker]

My center post was removed before I purchased the plane in 1995 (1977 337G). I know there is paperwork for the removal, I think a 337 form with some accompanying engineering data. I don’t think it was an STC.

I am not near the logbooks but will be so on Sunday.

I would be glad to either post them to the forum or email them to anyone who is interested.

No sense in going through the extra expense or re-inventing the wheel if it has been done previously and accepted by the FAA

Kevin

[kbecker]

Please see the attached pictures

[kbecker]

I have located the paperwork for the windshield without stiffener. It is a 337 form, filed in 1991, which also contains FAA form 8110-3 approved by a Structural DER on 5/3/1991. I have copies of this 8110-3 form with an "Analysis of Removal of Windshield Frame Center Member" and some accompanying photographs (which didn't reproduce well).

If anyone wants a copy of this form I would be happy to email it to you. I am a little reluctant to just post it to the website.

Kevin

[Pushpull5785]

Originally Posted by mshac

The post above, being the new member's first, seems to have a very strong interest in having the $600 STC fee paid. Is this account the STC Holder's sockpuppet? Very suspect as a first post. No introduction, no "about me", just "PAY THE MONEY"...

Most owners don't make the decision so publicly regarding what is essentially a note from the doctor explaining why you missed school. Am I wrong to say there is no structural modification to the airplane other than not reinstalling the center strap?

Reminds me of the Peterson/EAA autogas STC stickers. $1 per hp for a sticker that makes it legal to run mogas in your airplane. No changes to the airplane whatsoever. I know a lot of folks who are "sticklers" about paying for the sticker, and many others who don't give a rats **s. Never heard of anyone getting in trouble for it. Doubt highly anyone would care much about the center strap STC either, except the STC holder!

Sorry to jump back on this but it has thrown a wrench into my decision on which way to go now that you’ve brought up a few points…

Comparing this to the auto fuel stc, has anyone been flagged for removing the center post and not having the stc…

I would imagine if the STC holder cared about this he would be putting the feds onto any plane that does not have a center post and does not have his STC. Is this happening? If it’s not then why is there a discussion? Install what you want with your mechanics blessing and be on your way.

I guess I did not like being called a sock puppet but I still fail to see the big issue here. Does the OP want everyone to jump on board with his decision that could possibly not be legal? The only reason I felt that the cost is justifiable here is that we all know what we spend on our airplanes… and $600 is a drop in the bucket for what these planes demand and at least from my POV and that of my IA, it’s cheap insurance to remain legal. So at the end of the day, my question is, does the STC provide anything structurally or not? That should be the answer to your question on legality of minor or major correct?