A list of lift strut suppliers (updated 12 Dec 2007)

[jstall]

Re: A list of lift strut suppliers (updated 10 Nov 2007)

Is that article still there, can't find it. Assume General Aviation News--right? Found it, more or less, but I don't see anything on the Ingram "quote."
DC

Try this link

http://www.generalaviationnews.com/editorial/articledetail.lasso?-token.key=13500&-token.src=column&-nothing

It is the 10/6/06 GAN article written by Meg Gadlewski

[flyguy]

Re: A list of lift strut suppliers (updated 10 Nov 2007)

Thanks, had finally found it late last night.
DC

[Dave Weisgerber]

Re: A list of lift strut suppliers (updated 10 Nov 2007)

This will probably seem like a stupid question but my Dad has an L2-B which is a DCO 65. Does the AD apply to it, I ony see A, B, and F models listed. If it doesn't apply can somebody tell me why?
Thanks
Dave

[Guest]

Re: A list of lift strut suppliers (updated 10 Nov 2007)

It's a new one on me. Always thought a 337 got filed with an STC. Seems the STC is superfluous paper in this case. Maybe we will hear from others on this.

Gary, you are correct and part 91 says this too;

§ 91.403 General.

(d) A person must not alter an aircraft based on a supplemental type certificate unless the owner or operator of the aircraft is the holder of the supplemental type certificate, or has written permission from the holder.

so some type of written permission is required, holders often issue it by a/c serial number.

[Guest]

Re: A list of lift strut suppliers (updated 10 Nov 2007)

This will probably seem like a stupid question but my Dad has an L2-B which is a DCO 65. Does the AD apply to it, I ony see A, B, and F models listed. If it doesn't apply can somebody tell me why?
Thanks
Dave

Dave, read thru the AD to find the answer. Dave.

[Guest]

Re: A list of lift strut suppliers (updated 10 Nov 2007)

Dave,
I think I understand the STC part ok. AF PMA was developed using an existing STC for data. (see my entry above) The UV one was developed using new raw data. Both done under part 21. So much for the STC. So the 337 biz is the only thing that is a question to me. I see the Univair one as being a problem given the information we have presently.
Think we need some more information from UV or the FAA engineer. Question is: does a PMA precede a 337, making it unnecessary?
Edit: and what does a PMA as a "modified part" mean? Requires same paperwork as doing a splice (major repair--337), plus the AMOC?
Pictures multiple inspectors running screaming into woods, LOL.
DC

I noticed something, Univair's PMA catalog lists their strut as a replacement part not a modification part so the FAA RGL is out of date as stated earlier by Levi. I checked a few other parts. I think the RGL is screwed up. I saw Piper part numbers called out in Aeronca PMAs !

Dave

[Buell Powell]

Re: A list of lift strut suppliers (updated 10 Nov 2007)

So far looks like there are 3 sources for struts

Please add others that I missed.

Prices below are for four struts only, 2 front and 2 rear I round prices up to the next $50 increment. I kept it to 4 struts only so its a fair compare. Don't compare a price with jury struts included to a price witout them. Just keep it to comparison of the four needed struts.


********** I only list FAA/PMA sources below **************

1) Univair about $2750 => http://www.univairparts.com/

2) Tayorcraft about $3250 => http://www.taylorcraft.com/zencart/

3) Airfames Inc about $1800* => http://www.supercubs.com/fab_manufacturing.html
* base strut includes jury strut clamps too


Appears that Airframes Inc is a reality now and you can order struts from them.

David

Here is an eligilibilty list for Wag Aero's struts also. The price isn't set yet but they are saying they will try to keep below 1800.00 and will let us know soon. They have the PMA at the SA office now and should have the AMOC soon and will let us know on that.Univair has not yet gotton a PMA to add the pre-war and F models and may take some time-they will let us know.

[MJB]

Re: A list of lift strut suppliers (updated 10 Nov 2007)

Howdy out there,

If a company already has a PMA, why would they need an AMOC?

Thanks,

Mike

[astjp2]

Re: A list of lift strut suppliers (updated 10 Nov 2007)

If the part is FAA/PMA for the part number for the terminating action of the AD, It can be installed with a logbook entry. Many companies get an STC because it can be easier to get approved than a PMA. Some companies do STC's for everything, you are still covered, just have to fill out a 337 then do the logbook entry. If they have a PMA, they dont need an AMOC, one of the posts here says that...quoted from that helicopter FAA guy in TX. Tim

[flyguy]

Re: A list of lift strut suppliers (updated 10 Nov 2007)

Considering how much of the applicable FAA documentation reads as if it was written by a high school freshman shop student it is no wonder that there is confusion and 100 different opinions from various and sundry individuals out there, including FAA agents.
Seems to me that some manufacturers use a trickle down method where they do just enough paperwork to make the part usable and the owner and his inspector and perhaps the FSDO have to clean up the mess that is left over. Just an impression that I am starting to get from researching everything applicable to this problem.
DC
EDIT: Talked to Univair yesterday and received very good real/physical information on the struts themselves and the supply situation, but the paperwork discussion still left me with a sense of it all being circuitious mumbo-jumbo.

[MJB]

Re: A list of lift strut suppliers (updated 10 Nov 2007)

Thanks for the comments.

My Airframes, Inc. PMA'd struts will be delivered this month.

The daughter will be delivered in Feb.

Take Care

[Howard Wilson]

Re: A list of lift strut suppliers (updated 10 Nov 2007)

Early x-mas present from the far north (well AK) arrived today. Came with an STC. Will dig into the paperwork tonight for more info. $2075. delivered to mid MD.

[UNIVAIR]

Re: A list of lift strut suppliers (updated 10 Nov 2007)

Howdy out there,

If a company already has a PMA, why would they need an AMOC?

Thanks,

Mike

Univair has had a PMA on our struts for years, long before the AD. Our strut was intended to be a replacement for the original Type Design part and as such is a FAA-PMA approved part under the applicable provisions of FAR Part 21. Our strut is made from mild steel just like Taylorcraft's was made from mild steel. However, the AD requires a 4130 steel strut to provide for terminating action. We at Univair knew that our strut was structurally acceptable to comply with the AD and there are no mystical properties associated with 4130 or a structural need where only a 4130 strut could be used. However, without obtaining an AMOC our struts could not be accepted to terminate the requirements of the AD. Having obtained the AMOC, problem solved.

Also, you don't need a 337 when you install our struts. Do a log book entry, retain the AMOC and our invoice as part of the aircraft's records in case some future owner or IA wants proof of what was installed. FYI - you DO NEED TO DO A 337 WHEN INSTALLING A STC ITEM AS IT IS CONSIDERED A CHANGE FROM THE ORIGINAL TYPE DESIGN DATA.

Mike Sellers
Marketing & Sales Manager
Univair Aircraft

[MJB]

Re: A list of lift strut suppliers (updated 10 Nov 2007)

Thanks for the reply Mr. Sellers. Univair's UA-A815 and UA-A854 will only qualify as a terminating action for the AD if installed with an AMOC.

[UNIVAIR]

Re: A list of lift strut suppliers (updated 10 Nov 2007)

Thanks for the reply Mr. Sellers. Univair's UA-A815 and UA-A854 will only qualify as a terminating action for the AD if installed with an AMOC.

Now you're getting it straight! Trust me on this one guys, over the last 29 years I've seen thousands of struts go out the door for Aeroncas, Citabrias, Scouts, Decathlons, Cessna 120, 140,J-3,4,5, PA-11,12,14,16,17,18,19,20,22 & Pawnee, Stinson 108, -1,-2-3. Trust me I've sold struts to just about everybody in the universe. I know struts in my sleep. T-Craft struts aren't new to me. I don't like using my name and expert in the same sentence, but not here. What I have written above is backed up by years and years of answering the same questions. So don't let someone confuse you by telling you anything different when it comes to this documentation business.

Mike Sellers
Univair Aircraft