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Aeromatic Propellor on LSA...Is it legal?

Posted By:
Keith Leitch
23
Posts
2
#1 Posted: 4/13/2011 21:03:58

I have tried searching this subject as I remember recently reading a discussion about these propellors. Can anyone tell me if an Aeromatic Prop can be used on an LSA airplane?  It is not a constant speed but I seem to remember reading that since it "adjusts" it is not eligible. Any help would be appreciated.

Thank you



Ron Wanttaja
246
Posts
98
#2 Posted: 4/13/2011 23:15:38

 The Light Sport definition (14 CFR 1.1) says, "(7)  A fixed or ground-adjustable propeller if a powered aircraft other than a  powered glider."  The Aeromatic is a variable pitch propeller.



Ron Wanttaja
Keith Leitch
23
Posts
2
#3 Posted: 4/14/2011 07:24:33

Ron,

I agree that is why I posed the question. While the Aeromatic varies in pitch it is still a ground adjustable propellor. There is no way to adjust it in flight since the adjustment is done via weights, therefore it is adjusted on the ground.  I know  I am looking at a loophole here, and the other side of the arguement states "fixed pitch", I guess a good attorney could have a field day with it. There are several other props on the marlket that are degisned to "twist" as the load changes even though they are a fixed pitch prop. Maybe I am mistaken but the Prince and Catto might be a couple of these.

 Generally once these props are set up correctly they don't need any further adjustment. I think Tarver does a beautiful job refurbishing these propellors and I may need to just give up on the idea of putting one on an LSA complient plane.

Regards,

Keith

 



Kent Tarver
Homebuilder or Craftsman
7
Posts
1
#4 Posted: 4/15/2011 22:53:49

No, according to most people, because it is a variable pitch porpeller.

I plan to submit a request to the organization to make it legal. 

The guys that drafted the regs probably didn't know there was such a thing as an automatic pitch propeller.

I guess they didn't want a prop control in the cockpit to distract the pilot.

 

Kent Tarver

www.aeromtic.com