New propeller a "major Change"?

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New propeller a "major Change"?

Postby kmwoody » Fri Jan 09, 2015 3:59 pm

Hi all,

I am wondering about my compliance since I changed my prop from a Sensenich to a Prince. Would this be a "major change" on a Sonex since it is the same length and pitch, and at the time of registration, recommended on the Sonex website, but not at the time I changed it. Could someone please clarify this for me.

Thanks

Ken W
Sonex 959
Aerovee 282 hrs.
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Re: New propeller a "major Change"?

Postby Fastcapy » Fri Jan 09, 2015 5:10 pm

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Last edited by Fastcapy on Tue Feb 24, 2015 2:48 pm, edited 1 time in total.
Mike Beck
Oshkosh, WI (KOSH)
Sonex #1145 N920MB
Std Gear, Modified Aerovee, Rotec TBI, Dual Stick, Acro Ailerons
MGL Panel
Airworthiness: 10/24/13, First Flight: 05/18/14
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Location: KOSH

Re: New propeller a "major Change"?

Postby kmwoody » Fri Jan 09, 2015 6:23 pm

Thanks, that's the explanation I was looking for. I appreciate the indepth answer.

Ken W
Sonex 959
Aerovee 282 hr
kmwoody
 
Posts: 107
Joined: Mon Mar 24, 2014 8:14 pm

Re: New propeller a "major Change"?

Postby mike.smith » Fri Jan 09, 2015 6:33 pm

kmwoody wrote:Thanks, that's the explanation I was looking for. I appreciate the indepth answer.

Ken W
Sonex 959
Aerovee 282 hr


I have likewise always read and been told the same thing. If you replace with the same propeller, no problem. Anything else then you go back into Phase 1 for a short time. If you were inspected by a DAR and not an FAA inspector, you notify the FSDO and not your DAR. Often it just takes a letter of notification, and from some reports some FSDOs will barely even respond back, while others are more precise about the requirements.
Mike Smith
Sonex N439M
Scratch built, AeroVee, Dual stick, Tail dragger
http://www.mykitlog.com/mikesmith
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Re: New propeller a "major Change"?

Postby Fastcapy » Fri Jan 09, 2015 9:51 pm

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Last edited by Fastcapy on Tue Feb 24, 2015 2:48 pm, edited 1 time in total.
Mike Beck
Oshkosh, WI (KOSH)
Sonex #1145 N920MB
Std Gear, Modified Aerovee, Rotec TBI, Dual Stick, Acro Ailerons
MGL Panel
Airworthiness: 10/24/13, First Flight: 05/18/14
Fastcapy
 
Posts: 335
Joined: Sun Jan 12, 2014 11:45 am
Location: KOSH

Re: New propeller a "major Change"?

Postby Fastcapy » Fri Jan 09, 2015 9:52 pm

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Last edited by Fastcapy on Tue Feb 24, 2015 2:49 pm, edited 1 time in total.
Mike Beck
Oshkosh, WI (KOSH)
Sonex #1145 N920MB
Std Gear, Modified Aerovee, Rotec TBI, Dual Stick, Acro Ailerons
MGL Panel
Airworthiness: 10/24/13, First Flight: 05/18/14
Fastcapy
 
Posts: 335
Joined: Sun Jan 12, 2014 11:45 am
Location: KOSH

Re: New propeller a "major Change"?

Postby radfordc » Sat Jan 10, 2015 12:34 am

Legality aside, how would anyone know if you had changed props or not? According to the EAA webinar on registering an experimental plane a prop logbook isn't required for a plain fixed pitch wood prop. Is there a requirement to have the prop identified in any other document?
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Re: New propeller a "major Change"?

Postby mike.smith » Sat Jan 10, 2015 12:49 am

radfordc wrote:Legality aside, how would anyone know if you had changed props or not? According to the EAA webinar on registering an experimental plane a prop logbook isn't required for a plain fixed pitch wood prop. Is there a requirement to have the prop identified in any other document?


Like most of these kinds of things nobody finds out until you have an incident. Then you risk the possibility of scrutiny. The whole reason for the new Phase 1 is just to make sure it works as intended, and proves safe. Not bad advice whether it's required or not. :-)
Mike Smith
Sonex N439M
Scratch built, AeroVee, Dual stick, Tail dragger
http://www.mykitlog.com/mikesmith
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Re: New propeller a "major Change"?

Postby daleandee » Sat Jan 10, 2015 2:31 am

radfordc wrote:Legality aside, how would anyone know if you had changed props or not? According to the EAA webinar on registering an experimental plane a prop logbook isn't required for a plain fixed pitch wood prop. Is there a requirement to have the prop identified in any other document?


My DAR took the prop information from me (in our over the phone conversation before he came out) but I have no idea what form that information was processed on. He wanted info on the manufacturer, type, pitch, and the serial number. I'm one of those guys that keep separate logs for the engine, airframe, and prop. I agree with Mike that playing by the rules on this is a great idea especially if there were ever an accident and the FAA and insurance companies start looking for a reason to make your life miserable.

Dale
N319WF
81.7 Hours
Image
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Re: New propeller a "major Change"?

Postby Fastcapy » Sat Jan 10, 2015 2:34 pm

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Last edited by Fastcapy on Tue Feb 24, 2015 2:49 pm, edited 1 time in total.
Mike Beck
Oshkosh, WI (KOSH)
Sonex #1145 N920MB
Std Gear, Modified Aerovee, Rotec TBI, Dual Stick, Acro Ailerons
MGL Panel
Airworthiness: 10/24/13, First Flight: 05/18/14
Fastcapy
 
Posts: 335
Joined: Sun Jan 12, 2014 11:45 am
Location: KOSH

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