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Electronic ignition conversion

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dcw(at)mnwing.org
Guest

Posted: Tue Apr 11, 2006 3:27 pm Post subject: Electronic ignition conversion

Fellow Listers:



I am considering converting my RV-4 from a magneto ignition system to a dual 

Lightspeed EI system.  Do any of you know whether making this conversion is 

considered a major airframe change which would require an additional flight 

test period (I think it is 5 hours on my airworthiness certificate, which I 

do not have with me at the moment).



Thanks



Doug Weiler

RV-5, N722DW, 280 hours TT

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khorton01(at)rogers.com
Guest

Posted: Tue Apr 11, 2006 4:12 pm Post subject: Electronic ignition conversion

On 11 Apr 2006, at 19:22, Doug Weiler wrote:



 	  Quote: 	
		   



 Fellow Listers:



 I am considering converting my RV-4 from a magneto ignition system  

 to a dual

 Lightspeed EI system.  Do any of you know whether making this  

 conversion is

 considered a major airframe change which would require an  

 additional flight

 test period (I think it is 5 hours on my airworthiness certificate,  

 which I

 do not have with me at the moment).



 Thanks



 Doug Weiler

 RV-5, N722DW, 280 hours TT


	


Major and minor mods are defined in FAR 21.93:



Sec. 21.93



Classification of changes in type design.



(a) In addition to changes in type design specified in paragraph (b)  

of this section, changes in type design are classified as minor and  

major. A "minor change" is one that has no appreciable effect on the  

weight, balance, structural strength, reliability, operational  

characteristics, or other characteristics affecting the airworthiness  

of the product. All other changes are "major changes" (except as  

provided in paragraph (b) of this section).



The change in ignition system would be a major mod in the type- 

certificated world in which I work.  No question about it.



I think a simple way to think about it is to ask yourself the  

following question: If this mod is not done correctly, could it  

affect safety?



If the answer is yes, then you should put the aircraft back into the  

flight test phase, and do some proper testing to confirm everything  

is working properly.



Kevin Horton         RV-8 (finishing kit)

Ottawa, Canada

http://www.kilohotel.com/rv8

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mrobert569(at)hotmail.com
Guest

Posted: Wed Apr 12, 2006 1:54 pm Post subject: Electronic ignition conversion

In this case it is considered a major change and requires a minimum of five 

hours of flight testing.  Check your aircraft's operating limitations to be 

sure to do exactly what it says to do for a major change.



Mike Robertson

Das Fed

 	  Quote: 	
		  From: "Doug Weiler" <dcw(at)mnwing.org>

Reply-To: rv-list(at)matronics.com

To: <rv-list(at)matronics.com>

Subject: Electronic ignition conversion

Date: Tue, 11 Apr 2006 18:22:21 -0500






Fellow Listers:



I am considering converting my RV-4 from a magneto ignition system to a 

dual

Lightspeed EI system.  Do any of you know whether making this conversion is

considered a major airframe change which would require an additional flight

test period (I think it is 5 hours on my airworthiness certificate, which I

do not have with me at the moment).



Thanks



Doug Weiler

RV-5, N722DW, 280 hours TT

- The Matronics RV-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV-List

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