---------------------------------------------------------- TeamGrumman-List Digest Archive --- Total Messages Posted Tue 10/05/10: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:03 AM - Re: Jaguar cowling with the stock muffler STC (Dj Merrill) 2. 10:14 AM - Re: Jaguar cowling with the stock muffler STC (grumpyparts) 3. 11:13 AM - Garner, thanks for the decal (Gary Vogt) 4. 11:13 AM - Brain fart (Gary Vogt) 5. 11:26 AM - Re: Re: Jaguar cowling with the stock muffler STC POWERFLO CERTIFICATION (RESTR 1) 6. 12:19 PM - Re: Brain fart (grumpyparts) ________________________________ Message 1 _____________________________________ Time: 07:03:52 AM PST US Subject: Re: TeamGrumman-List: Jaguar cowling with the stock muffler STC From: Dj Merrill On 10/04/2010 11:32 PM, Gary Vogt wrote: > It seems like it would be easy to certify the cowling with the stock > muffler, doesn't it. I mean, hey, the stock Tiger has one. What many > of you fail to grasp is just what changing a small thing like the > muffler would entail. There is absolutely nothing 'logical' about > getting an STC. It's all about examining every possible affect a change > makes and then investigating that possibility and how it MIGHT affect > the safety of the airplane. Which is precisely why a lot of us are turning to experimental aviation. We've over-regulated ourselves right out of the certified market, making the price so high that us mere mortals can't afford to play there anymore. If you just want to fly and not play, certifieds are great for that. With my budget I can't even contemplate paying multiple thousands of dollors for an exhaust system or a cowling. Just no way I could afford to do it. But I can fabricate my own exhaust or cowling for an experimental for the cost of materials and my labor, and when I am working for myself, my labor is cheap! :-) I really applaud you guys pursuing the STC options for our aircraft. I wish there were a way we could make the process a lot easier and cheaper so more of us could afford to enjoy the fruits of your efforts. -Dj -- Dj Merrill - N1JOV Glastar Sportsman 2+2 Builder #7118 N421DJ - http://deej.net/sportsman/ Please use Netiquette Guidelines http://tools.ietf.org/html/rfc1855 Kindly TRIM your email replies and post AFTER the relevant text ________________________________ Message 2 _____________________________________ Time: 10:14:41 AM PST US Subject: TeamGrumman-List: Re: Jaguar cowling with the stock muffler STC From: "grumpyparts" > What many of you fail to grasp is just what changing a small thing like the muffler would entail. So it would be interesting to know whether Power Flow had all the same hoops to jump through when getting the STC for the Standard cowling and again when they changed it from external to internal. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=314808#314808 ________________________________ Message 3 _____________________________________ Time: 11:13:14 AM PST US From: Gary Vogt Subject: TeamGrumman-List: Garner, thanks for the decal I found the perfect spot for it. ________________________________ Message 4 _____________________________________ Time: 11:13:32 AM PST US From: Gary Vogt Subject: TeamGrumman-List: Brain fart Did I send before and after pics of the oil flow tests on my cowling? I thought I did but I can't find the email. ________________________________ Message 5 _____________________________________ Time: 11:26:00 AM PST US From: RESTR 1 Subject: Re: TeamGrumman-List: Re: Jaguar cowling with the stock muffler STC POWERFLO CERTIFICATION Certification Process back to top The main goal of the certification process is to be issued a Supplemental Type Certificate (STC) and a Parts Manufacturing Approval (PMA) by the FAA. These allow us to sell and install our Tuned Exhaust Systems. While there aren't that many steps involved, the whole process may take up to a year before an STC is issued! The first step involves submitting an application for an STC/PMA to the local FAA office. This application includes which product we seek to certify, and on which aircraft the product will be installed. The application also includes a schedule of when the different phases of the project are to be completed, as well as some administrative data. Next, after all of the assembly drawings (headers, collectors, etc.) are made, they are submitted for review. We are then required to wait for a Statement of Conformity which, when signed by the FAA states that we are permitted to move on to the approved test proposal. Getting past this hurdle is 75% of the battle. After everything has been approved, we move on to the inspection and testing of the completed assembly. Here, an FAA representative witnesses an install, and flight test. If everything is with in compliance, the FAA representative submits a recommendation for STC. This recommendation is then reviewed, and if there are no problems, we are submitted an STC! Sound pretty easy? Well, it would be, but keep in mind that if something is found that doesn't meet the strict tolerances of the FAA, it may take weeks to correct. This could range from a simple re-weld of a header, to putting an aircraft into an experimental category for three months. We make an effort to work with the FAA as efficiently as possible, but sometimes, the only answer is patience. On 10/5/2010 10:12 AM, grumpyparts wrote: > --> TeamGrumman-List message posted by: "grumpyparts" > > >> What many of you fail to grasp is just what changing a small thing like the muffler would entail. > > So it would be interesting to know whether Power Flow had all the same hoops to jump through when getting the STC for the Standard cowling and again when they changed it from external to internal. > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=314808#314808 > > ________________________________ Message 6 _____________________________________ Time: 12:19:02 PM PST US Subject: TeamGrumman-List: Re: Brain fart From: "grumpyparts" Is this what you were looking for Gary. http://forums.matronics.com/viewtopic.php?t=74383 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=314832#314832 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message teamgrumman-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/TeamGrumman-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/teamgrumman-list Browse Digests http://www.matronics.com/digest/teamgrumman-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.