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Gomolzig Muffler

 
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Stefan



Joined: 01 Dec 2009
Posts: 10
Location: Germany, just south of Munich

PostPosted: Fri Mar 12, 2010 7:27 am    Post subject: Gomolzig Muffler Reply with quote

Hi

I would like to get a Gomolzig muffler (partno 606050) on a N-registered Maule M-7-235C with O540-B4B5. This muffler is completly contained inside the cowling and has just a single exhaust pipe. Noise reduction vs. std. muffler is expected to be 4-5 db(A). Two questions:

1) Can anyone offer some advice as to field approval procedure? Plane is now in Moultrie.

2) Once the plane is in Europe, we will conduct noise measurement flights with the ultimate goal of getting a level below 71,8 db(A) acc to chapter 10. This would qualify for "erhöhter Lärmschutz" in Germany. Anyone interested to participate?

Lastly I do have drawings and the Swiss/Easa STC for this exhaust, if anyone is interested.

Re Stefan
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aero101



Joined: 14 Feb 2008
Posts: 1620
Location: Fairbanks, Alaska

PostPosted: Fri Mar 12, 2010 8:00 am    Post subject: Reply with quote

You might want to talk to David Wright at Wright Aircraft Technologies in Moultrie or even Maule Air... They would probably have an idea as to how receptive FAA would be to field approval vs one time STC? I think the Feds are a little harder to deal with down there and would probably require the STC route, but they may buy into a field approval if sufficient data is available...

wrightaircraft@windstream.net

Upon reviewing Gomolzig Website and their certifications I would venture to say it's just a matter of paying to get all the data together to submit to FAA. It appears that they already have an STC for the MX7-235 if I'm correct? Basically same airplane in power / exhaust / noise departments... I'd be curious if they have any intentions of certifying a system for the MX7-180?
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http://www.northstar-aero.com

Giving money and power to government is like giving whiskey and car keys to teenage boys.
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