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teamgrumman(at)yahoo.com
Guest

Posted: Tue Feb 18, 2014 11:28 am Post subject: here's a new one

I had just finished setting the mixture on a FWF restoration I'm doing on N28819.  You can see a lot of pics of it on the AuCountry Aviation Facebook page.

When I pulled out the mixture to check one last time to make sure the mixture went to cutoff, the cable broke.  That has never happened before.

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JHOSLER(at)epri.com
Guest

Posted: Tue Feb 18, 2014 11:49 am Post subject: here's a new one

Not good.  How often should these be replaced? 

From: owner-teamgrumman-list-server(at)matronics.com [mailto:owner-teamgrumman-list-server(at)matronics.com] On Behalf Of Gary L Vogt

 Sent: Tuesday, February 18, 2014 2:27 PM

 To: Teamgrumman List

 Subject: here's a new one 

I had just finished setting the mixture on a FWF restoration I'm doing on N28819.  You can see a lot of pics of it on the AuCountry  Aviation Facebook page. 

When I pulled out the mixture to check one last time to make sure the mixture went to cutoff, the cable broke.  That has never happened before. 

    [quote][b]

Discover

Joined: 26 Feb 2007
Posts: 429

Posted: Tue Feb 18, 2014 12:08 pm Post subject: here's a new one

Gary,

That happened to me once. Fortunately, it happened at the end of a flight with the last pull of the mixture cable to kill the engine. It just kept coming out. Glad it didn't happen during flight....



I did have a throttle cable disconnect during another flight. Glad the mixture didn't break that day....

Ned

BARRY CHECK 6

Joined: 15 Mar 2011
Posts: 738

Posted: Tue Feb 18, 2014 12:50 pm Post subject: here's a new one

I guess that is why the AD on the cables.  Why hasn't the AD covered the AA5x series?



Better on the ground that in the air and consider how difficult the FAA would have made your life if there was an accident!

 



Barry



On Tuesday, February 18, 2014, Gary L Vogt <teamgrumman(at)yahoo.com (teamgrumman(at)yahoo.com)> wrote:

[quote] I had just finished setting the mixture on a FWF restoration I'm doing on N28819.  You can see a lot of pics of it on the AuCountry Aviation Facebook page.

 



When I pulled out the mixture to check one last time to make sure the mixture went to cutoff, the cable broke.  That has never happened before.

 



[b]

teamgrumman(at)yahoo.com
Guest

Posted: Tue Feb 18, 2014 1:11 pm Post subject: here's a new one

This is the first cable failure I've seen.  I've seen problems with the throttle brackets on the AG5B but nothing on an AA5B.  

 

 

     On Tuesday, February 18, 2014 12:14 PM, 923TE <923te(at)att.net> wrote:

  

  --> TeamGrumman-List message posted by: 923TE <923te(at)att.net (923te(at)att.net)>



Gary,

That happened  to me once. Fortunately, it happened at the end of a flight with the last pull of the mixture cable to kill the engine. It just kept coming out. Glad it didn't happen during flight....



I did have a throttle cable disconnect during another flight. Glad the mixture didn't break that day....

teamgrumman(at)yahoo.com
Guest

Posted: Tue Feb 18, 2014 1:11 pm Post subject: here's a new one

What AD is that?

 

 

     On Tuesday, February 18, 2014 12:56 PM, FLYaDIVE <flyadive(at)gmail.com> wrote:

  

  I guess that is why the AD on the cables.  Why hasn't the AD covered the AA5x series?

Better on the ground that in the air and consider how difficult the FAA would have made your life if there was an accident!

 

BarryOn Tuesday, February 18, 2014, Gary L Vogt <teamgrumman(at)yahoo.com (teamgrumman(at)yahoo.com)> wrote:[quote] I had just finished setting the mixture on a FWF restoration I'm doing on N28819.  You can see a lot of pics of it on the AuCountry Aviation Facebook page.

 

When I pulled out the mixture to check one last time to make sure the mixture went to cutoff, the cable broke.  That has never happened before.

 



http://www.matronics.com/Navigatoe="rect" target="_blank" href="http://forums.matronics.com/">http://ff="http://www.matronics.com/contribution">http://www.matronics.com/contri===============


[b]

n76lima(at)mindspring.com
Guest

Posted: Tue Feb 18, 2014 1:28 pm Post subject: here's a new one

From: Gary L Vogt 

 	  Quote: 	
		  I had just finished setting the mixture on a FWF restoration I'm doing on N28819.  You can see a lot of pics of >it on the AuCountry Aviation Facebook page.

When I pulled out the mixture to check one last time to make sure the mixture went to cutoff, the cable broke.  >That has never happened before.


	


Looks just like the mixture cable failure on the AA-1/A/B that has the 500 hour replacement.

Haven't seen it on a 4-place, but have seen and replaced several on 2-place.

Beech had a problem with them on the Skipper, too.

--Bob Steward

Birmingham, AL

n76lima(at)mindspring.com
Guest

Posted: Tue Feb 18, 2014 1:50 pm Post subject: here's a new one

From: Gary L Vogt 

What AD is that? 



75-09-07 04/25/1975 Mixture Control Wires



Affects all AA-1, AA-1A, and AA-1B.  AA-1C were exempt, because Grumman claimed they "re-routed" the mixture cable.



--Bob Steward

garnerrice(at)hotmail.com
Guest

Posted: Tue Feb 18, 2014 2:06 pm Post subject: here's a new one

Apparently that was not the lifetime warranty cable.  From the looks of the faded knob, I may have been in there for lets say, 36 years?



G



Date: Tue, 18 Feb 2014 11:27:15 -0800

From: teamgrumman(at)yahoo.com

Subject: here's a new one

To: teamgrumman-list(at)matronics.com



I had just finished setting the mixture on a FWF restoration I'm doing on N28819.  You can see a lot of pics of it on the AuCountry Aviation Facebook page.

When I pulled out the mixture to check one last time to make sure the mixture went to cutoff, the cable broke.  That has never happened before.



 		 	   		  

  [quote][b]

teamgrumman(at)yahoo.com
Guest

Posted: Tue Feb 18, 2014 11:47 pm Post subject: here's a new one

What's an AA1?



Gary

Sent from my iPad



 	  Quote: 	
		   On Feb 18, 2014, at 1:50 PM, <n76lima(at)mindspring.com> wrote:

 

 

 

 From: Gary L Vogt 

 What AD is that? 

 

 75-09-07 04/25/1975 Mixture Control Wires

 

 Affects all AA-1, AA-1A, and AA-1B.  AA-1C were exempt, because Grumman claimed they "re-routed" the mixture cable.

 

 --Bob Steward

david(at)newlangsyne.com
Guest

Posted: Wed Feb 19, 2014 4:31 am Post subject: here's a new one

I saw this happen to a prop cable.  Came right out while the pilot was cycling the prop before takeoff.  It was a vernier cable, and 

the pilots flying that plane had a habit of screwing it in before landing, rather than pushing it in.  They'd screw it all the way 

in and then some, kinking the cable.



On the AA-1 series, the recurring AD can be eliminated by replacing the cable with a vernier control.  Oh, well ...

BARRY CHECK 6

Joined: 15 Mar 2011
Posts: 738

Posted: Wed Feb 19, 2014 4:46 am Post subject: here's a new one

David:

 Screwing the cable in, or Pushing the cable in makes no difference.  If anything, pushing it in would put more flexing force than screwing it in.  The 'CABLE' does not turn when being screwed in, it is only shaft portion right behind the the knob that turns; Full In is Full In.  No matter how it is achieved. There is also a 'slippage' to the screwing action, so you could twist all day long without ever increasing any force on the cable.  Why did the cable break?  Only the cable knows for sure.

 



Barry



On Wed, Feb 19, 2014 at 5:08 AM, David Feinstein <david(at)newlangsyne.com (david(at)newlangsyne.com)> wrote:

 [quote]--> TeamGrumman-List message posted by: "David Feinstein" <david(at)newlangsyne.com (david(at)newlangsyne.com)>

  

 I saw this happen to a prop cable.  Came right out while the pilot was cycling the prop before takeoff.  It was a vernier cable, and

 the pilots flying that plane had a habit of screwing it in before landing, rather than pushing it in.  They'd screw it all the way

 in and then some, kinking the cable.

 

 On the AA-1 series, the recurring AD can be eliminated by replacing the cable with a vernier control.  Oh, well ...

 

 

 ===========

 List" target="_blank">http://www.matronics.com/Navigator?TeamGrumman-List

 ===========

 http://forums.matronics.com

 ===========

 le, List Admin.

 ="_blank">http://www.matronics.com/contribution

 ===========

 

 

 

 [b]

boxereighty(at)AOL.COM
Guest

Posted: Thu Feb 20, 2014 8:10 am Post subject: here's a new one

 	  Quote: 	
		  John: 

  

 Here is a link to the AD: 

  

 http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/AOCADSearch/650EF5216513544186256A38005DF83B?OpenDocument 

  

 Here is the AD info: 

  

 Amendment 39-2180; AD 75-09-07 

  

  

 Barry 

  

  

 On Tue, Feb 18, 2014 at 4:11 PM, Hosler, John<JHOSLER(at)epri.com> (JHOSLER(at)epri.com)  wrote: 

  

  	  Quote: 	
		    What is the AD on the cables? 

  

  

 John 

  

  

 *From:*owner-teamgrumman-list-server(at)matronics.com  [mailto: 

 owner-teamgrumman-list-server(at)matronics.com (owner-teamgrumman-list-server(at)matronics.com)] *On Behalf Of *FLYaDIVE 

 *Sent:* Tuesday, February 18, 2014 3:51 PM 

 *To:*teamgrumman-list(at)matronics.com 

 *Subject:* Re: here's a new one 

  

  

 I guess that is why the AD on the cables.  Why hasn't the AD covered the 

 AA5x series? 

  

  

 Better on the ground that in the air and consider how difficult the FAA 

 would have made your life if there was an accident! 

  

  

 Barry 

  

 On Tuesday, February 18, 2014, Gary L Vogt<teamgrumman(at)yahoo.com> (teamgrumman(at)yahoo.com)  wrote: 

  

 I had just finished setting the mixture on a FWF restoration I'm doing on 

 N28819.  You can see a lot of pics of it on the AuCountry Aviation Facebook 

 page. 

  

  

 When I pulled out the mixture to check one last time to make sure the 

 mixture went to cutoff, the cable broke.  That has never happened before. 

  

  

 ============== TeamGrumman-List Email Forum - :p> /o:p> >gator?TeamGrumman-List"> 

 http://www.matronics.com/Navigator?TeamGrumman-List  ==============      - 

 MATRONICS WEB FORUMS - /o:p>http://forums.matronics.com  ==============   - List Contribution Web Site -pre>                     -Matt Dralle, List Admin.ribution"> 

 http://www.matronics.com/contribution  ============= 

  

  

 	
	
The same thing happened to me at the end of a flight in my AA1C. My A&P (new to me at the time) said there was an AD on it but that was secondary, the  mixture control obviously had to be replaced since it was broken, AD or  not so I didn't research the point. At the time the plane had in the vicinity of 1000hrs TT Â±. So I think the  rumors of an improved bracket on 1C models negating the AD might be  overstated. The AD (from the above link) was published and amended in  1975 which was two years before the C model  came to market. Maybe the  cable really was improved so was never added to the AD, I'm not going to  research it now, but quite obviously based on my experience the cable  was still susceptible to breakage after very low time in service. Even  on an AA1C. I put a vernier mixture control on the Lynx and never had  another problem in the next 10 years until I sold it. 

  

 Brent Smith 

 N28386/1N1 

  

 

 

   [quote][b]

JHOSLER(at)epri.com
Guest

Posted: Thu Feb 20, 2014 9:41 am Post subject: here's a new one

Thanks, I used to have a mechanic that checked the cable every annual as a matter of course (and we did change the cable once â€“not sure why.  The bending of  the end of the cable at the attachment always seemed to me to be the weak point. 

From: owner-teamgrumman-list-server(at)matronics.com [mailto:owner-teamgrumman-list-server(at)matronics.com] On Behalf Of boxereighty(at)AOL.COM

 Sent: Thursday, February 20, 2014 11:10 AM

 To: teamgrumman-list(at)matronics.com

 Subject: TeamGrumman-List: here's a new one 

    	  Quote: 	

John: 

 Here is a link to the AD: 

 http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/AOCADSearch/650EF5216513544186256A38005DF83B?OpenDocument 

 Here is the AD info: 

 Amendment 39-2180; AD 75-09-07 

 Barry 

 On Tue, Feb 18, 2014 at 4:11 PM, Hosler, John<JHOSLER(at)epri.com> (JHOSLER(at)epri.com)  wrote: 

  What is the AD on the cables? 

 John 

 *From:*owner-teamgrumman-list-server(at)matronics.com  [mailto: 

 owner-teamgrumman-list-server(at)matronics.com (owner-teamgrumman-list-server(at)matronics.com)] *On Behalf Of *FLYaDIVE 

 *Sent:* Tuesday, February 18, 2014 3:51 PM 

 *To:*teamgrumman-list(at)matronics.com 

 *Subject:* Re: TeamGrumman-List: here's a new one 

 I guess that is why the AD on the cables.  Why hasn't the AD covered the 

 AA5x series? 

 Better on the ground that in the air and consider how difficult the FAA 

 would have made your life if there was an accident! 

 Barry 

 On Tuesday, February 18, 2014, Gary L Vogt<teamgrumman(at)yahoo.com> (teamgrumman(at)yahoo.com)  wrote: 

 I had just finished setting the mixture on a FWF restoration I'm doing on 

 N28819.  You can see a lot of pics of it on the AuCountry Aviation Facebook 

 page. 

 When I pulled out the mixture to check one last time to make sure the 

 mixture went to cutoff, the cable broke.  That has never happened before. 

 ============== TeamGrumman-List Email Forum - :p> /o:p> >gator?TeamGrumman-List"> 

 http://www.matronics.com/Navigator?TeamGrumman-List  ==============      - 

 MATRONICS WEB FORUMS - /o:p>http://forums.matronics.com  ==============   - List Contribution Web Site -pre>                     -Matt Dralle, List Admin.ribution"> 

 http://www.matronics.com/contribution  ============= 

The same thing happened to me at the end of a flight in my AA1C. My A&P (new to me at the time) said there was an AD on it but that was secondary, the mixture control obviously had to be replaced since it was  broken, AD or not so I didn't research the point. At the time the plane had in the vicinity of 1000hrs TT Â±. So I think the rumors of an improved bracket on 1C models negating the AD might be overstated. The AD (from the above link) was published and amended  in 1975 which was two years before the C model  came to market. Maybe the cable really was improved so was never added to the AD, I'm not going to research it now, but quite obviously based on my experience the cable was still susceptible to breakage after  very low time in service. Even on an AA1C. I put a vernier mixture control on the Lynx and never had another problem in the next 10 years until I sold it. 

 Brent Smith 

 N28386/1N1 

  	  Quote: 	
		    _-============================================================_-=          - The TeamGrumman-List Email Forum -_-= Use the Matronics List Features Navigator to browse_-= the many List utilities such as List Un/Subscription,_-= Archive Search & Download, 7-Day Browse, Chat, FAQ,_-= Photoshare, and much much more:_-=_-=   --> http://www.matronics.com/Navigator?TeamGrumman-List  	
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BARRY CHECK 6

Joined: 15 Mar 2011
Posts: 738

Posted: Fri Feb 21, 2014 5:07 am Post subject: here's a new one

John & Team:

 Here is an unusual thing...  Ever notice how a pilot handles the Throttle Control?  Usually it is very gently - Nice smooth actions, in and out.  BUT! Then watch the way the same pilot handles the Mixture Control.  Sure they adjust the Mixture nice and smooth.  BUT!  Watch them Pull, Yank and Slam the Mixture Control OUT when they shut off the Engine/Mixture.  WHY!  Why not slowly and gently pull it out?  And watch the Tach at the same time...  You should see a 50 RPM increase just before the engine dies.  Doing it this way you do not abuse the cable and the 50 RPM increase is one of the indications you have the Carb Adjusted correctly.  Some things you do fast and some things you do slow and gentle.  It's like making love.

 



Barry



On Thu, Feb 20, 2014 at 12:40 PM, Hosler, John <JHOSLER(at)epri.com (JHOSLER(at)epri.com)> wrote:

  	  Quote: 	
		          

Thanks, I used to have a mechanic that checked the cable every annual as a matter of course (and we did change the cable once &ndash;not sure why.  The bending of  the end of the cable at the attachment always seemed to me to be the weak point. 

   

From: owner-teamgrumman-list-server(at)matronics.com (owner-teamgrumman-list-server(at)matronics.com) [mailto:owner-teamgrumman-list-server(at)matronics.com (owner-teamgrumman-list-server(at)matronics.com)] On Behalf Of boxereighty(at)AOL.COM (boxereighty(at)AOL.COM)

 Sent: Thursday, February 20, 2014 11:10 AM

 To: teamgrumman-list(at)matronics.com (teamgrumman-list(at)matronics.com)

 Subject: here's a new one



 

 

    	  Quote: 	
		   

John: 

 

 Here is a link to the AD: 

 

 http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/AOCADSearch/650EF5216513544186256A38005DF83B?OpenDocument 

 

 Here is the AD info: 

 

 Amendment 39-2180; AD 75-09-07 

 

 

 Barry 

 

 

 On Tue, Feb 18, 2014 at 4:11 PM, Hosler, John<JHOSLER(at)epri.com> (JHOSLER(at)epri.com)  wrote: 

 

 

  

  What is the AD on the cables? 

 

 

 John 

 

 

 *From:*owner-teamgrumman-list-server(at)matronics.com (owner-teamgrumman-list-server(at)matronics.com)  [mailto: 

 owner-teamgrumman-list-server(at)matronics.com (owner-teamgrumman-list-server(at)matronics.com)] *On Behalf Of *FLYaDIVE 

 *Sent:* Tuesday, February 18, 2014 3:51 PM 

 *To:*teamgrumman-list(at)matronics.com (teamgrumman-list(at)matronics.com) 

 *Subject:* Re: here's a new one 

 

 

 I guess that is why the AD on the cables.  Why hasn't the AD covered the 

 AA5x series? 

 

 

 Better on the ground that in the air and consider how difficult the FAA 

 would have made your life if there was an accident! 

 

 

 Barry 

 

 On Tuesday, February 18, 2014, Gary L Vogt<teamgrumman(at)yahoo.com> (teamgrumman(at)yahoo.com)  wrote: 

 



 I had just finished setting the mixture on a FWF restoration I'm doing on 

 N28819.  You can see a lot of pics of it on the AuCountry Aviation Facebook 

 page. 

 

 

 When I pulled out the mixture to check one last time to make sure the 

 mixture went to cutoff, the cable broke.  That has never happened before. 

 

 



 ============== TeamGrumman-List Email Forum - :p> /o:p> >gator?TeamGrumman-List"> 

 http://www.matronics.com/Navigator?TeamGrumman-List  ==============      - 

 MATRONICS WEB FORUMS - /o:p>http://forums.matronics.com  ==============   - List Contribution Web Site -pre>                     -Matt Dralle, List Admin.ribution"> 

 http://www.matronics.com/contribution  ============= 

 

 

 	
 

The same thing happened to me at the end of a flight in my AA1C. My A&P (new to me at the time) said there was an AD on it but that was secondary, the mixture control obviously had to be replaced since it was  broken, AD or not so I didn't research the point. At the time the plane had in the vicinity of 1000hrs TT ±. So I think the rumors of an improved bracket on 1C models negating the AD might be overstated. The AD (from the above link) was published and amended  in 1975 which was two years before the C model  came to market. Maybe the cable really was improved so was never added to the AD, I'm not going to research it now, but quite obviously based on my experience the cable was still susceptible to breakage after  very low time in service. Even on an AA1C. I put a vernier mixture control on the Lynx and never had another problem in the next 10 years until I sold it. 

 

 Brent Smith 

 N28386/1N1 

 

  

  	  Quote: 	
		    	
 ==============[/b] 	
 eamGrumman-List Email Forum -[/b][/quote] [/u][/b][/quote] u>[/u][/b][/quote] >[/b][/quote] tor?TeamGrumman-List" target="_blank">http://www.matronics.com/Navigator?TeamGrumman-List[/b][/quote] ==============[/b][/quote] bsp;    - MATRONICS WEB FORUMS -[/b][/quote] u>[/u][/b][/quote] rget="_blank">http://forums.matronics.com[/b][/quote] ==============[/b][/quote] bsp;  - List Contribution Web Site -[/b][/quote] /pre> bsp;                   -Matt Dralle, List Admin.[/b][/quote] bution" target="_blank">http://www.matronics.com/contribution[/b][/quote] ==============[/b] [/quote] 



 

  [b]

JHOSLER(at)epri.com
Guest

Posted: Fri Feb 21, 2014 7:33 am Post subject: here's a new one

Got it! 

From: owner-teamgrumman-list-server(at)matronics.com [mailto:owner-teamgrumman-list-server(at)matronics.com] On Behalf Of FLYaDIVE

 Sent: Friday, February 21, 2014 8:07 AM

 To: teamgrumman-list(at)matronics.com

 Subject: Re: here's a new one 

John & Team: 

Here is an unusual thing...  Ever notice how a pilot handles the Throttle Control?  Usually it is very gently - Nice smooth actions, in and out.  BUT! Then watch the way the same pilot handles  the Mixture Control.  Sure they adjust the Mixture nice and smooth.  BUT!  Watch them Pull, Yank and Slam the Mixture Control OUT when they shut off the Engine/Mixture.  WHY!  Why not slowly and gently pull it out?  And watch the Tach at the same time...  You  should see a 50 RPM increase just before the engine dies.  Doing it this way you do not abuse the cable and the 50 RPM increase is one of the indications you have the Carb Adjusted correctly.  Some things you do fast and some things you do slow and gentle.   It's like making love. 

Barry 

On Thu, Feb 20, 2014 at 12:40 PM, Hosler, John <JHOSLER(at)epri.com (JHOSLER(at)epri.com)> wrote:   

Thanks, I used to have a mechanic that checked the cable every annual as a matter of course (and  we did change the cable once –not sure why.  The bending of the end of the cable at the attachment always seemed to me to be the weak point. 

From: owner-teamgrumman-list-server(at)matronics.com (owner-teamgrumman-list-server(at)matronics.com) [mailto:owner-teamgrumman-list-server(at)matronics.com (owner-teamgrumman-list-server(at)matronics.com)] On Behalf Of boxereighty(at)AOL.COM (boxereighty(at)AOL.COM)

 Sent: Thursday, February 20, 2014 11:10 AM

 To: teamgrumman-list(at)matronics.com (teamgrumman-list(at)matronics.com)  

 Subject: here's a new one 

    	  Quote: 	

John: 

 Here is a link to the AD: 

 http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/AOCADSearch/650EF5216513544186256A38005DF83B?OpenDocument 

 Here is the AD info: 

 Amendment 39-2180; AD 75-09-07 

 Barry 

 On Tue, Feb 18, 2014 at 4:11 PM, Hosler, John<JHOSLER(at)epri.com> (JHOSLER(at)epri.com)  wrote: 

  What is the AD on the cables? 

 John 

 *From:*owner-teamgrumman-list-server(at)matronics.com (owner-teamgrumman-list-server(at)matronics.com)  [mailto: 

 owner-teamgrumman-list-server(at)matronics.com (owner-teamgrumman-list-server(at)matronics.com)] *On Behalf Of *FLYaDIVE 

 *Sent:* Tuesday, February 18, 2014 3:51 PM 

 *To:*teamgrumman-list(at)matronics.com (teamgrumman-list(at)matronics.com) 

 *Subject:* Re: here's a new one   

 I guess that is why the AD on the cables.  Why hasn't the AD covered the 

 AA5x series? 

 Better on the ground that in the air and consider how difficult the FAA 

 would have made your life if there was an accident! 

 Barry 

 On Tuesday, February 18, 2014, Gary L Vogt<teamgrumman(at)yahoo.com> (teamgrumman(at)yahoo.com)  wrote:  

I had just finished setting the mixture on a FWF restoration I'm doing on 

 N28819.  You can see a lot of pics of it on the AuCountry Aviation Facebook 

 page. 

 When I pulled out the mixture to check one last time to make sure the 

 mixture went to cutoff, the cable broke.  That has never happened before. 

============== TeamGrumman-List Email Forum - :p> /o:p> >gator?TeamGrumman-List"> 

 http://www.matronics.com/Navigator?TeamGrumman-List  ==============      - 

 MATRONICS WEB FORUMS - /o:p>http://forums.matronics.com  ==============   - List Contribution Web Site -pre>                     -Matt Dralle, List Admin.ribution"> 

 http://www.matronics.com/contribution  =============  	

The same thing happened to me at the end of a flight in my AA1C. My A&P (new to me at the time) said there was an AD on it but that was secondary, the mixture control obviously had to  be replaced since it was broken, AD or not so I didn't research the point. At the time the plane had in the vicinity of 1000hrs TT ±. So I think the rumors of an improved bracket on 1C models negating the AD might be overstated. The AD (from the above link)  was published and amended in 1975 which was two years before the C model  came to market. Maybe the cable really was improved so was never added to the AD, I'm not going to research it now, but quite obviously based on my experience the cable was still susceptible  to breakage after very low time in service. Even on an AA1C. I put a vernier mixture control on the Lynx and never had another problem in the next 10 years until I sold it. 

 Brent Smith 

 N28386/1N1  

   	  Quote: 	

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eamGrumman-List Email Forum - 

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teamgrumman(at)yahoo.com
Guest

Posted: Fri Feb 21, 2014 7:27 pm Post subject: here's a new one

Good point, Barry.  I'll have to see just how I pull the mixture to IDLE cutoff.  I don't know off hand.

 

 

     On Friday, February 21, 2014 7:39 AM, "Hosler, John" <JHOSLER(at)epri.com> wrote:

  

            Got it!

    

   From: owner-teamgrumman-list-server(at)matronics.com [mailto:owner-teamgrumman-list-server(at)matronics.com] On Behalf Of FLYaDIVE

 Sent: Friday, February 21, 2014 8:07 AM

 To: teamgrumman-list(at)matronics.com

 Subject: Re: TeamGrumman-List: here's a new one

  

   

    John & Team:

  

    

  

  Here is an unusual thing...  Ever notice how a pilot handles the Throttle Control?  Usually it is very gently - Nice smooth actions, in and out.  BUT! Then watch the way the same pilot handles  the Mixture Control.  Sure they adjust the Mixture nice and smooth.  BUT!  Watch them Pull, Yank and Slam the Mixture Control OUT when they shut off the Engine/Mixture.  WHY!  Why not slowly and gently pull it out?  And watch the Tach at the same time...  You  should see a 50 RPM increase just before the engine dies.  Doing it this way you do not abuse the cable and the 50 RPM increase is one of the indications you have the Carb Adjusted correctly.  Some things you do fast and some things you do slow and gentle.   It's like making love.

  

    

  

  Barry

  

 

    

   On Thu, Feb 20, 2014 at 12:40 PM, Hosler, John <JHOSLER(at)epri.com (JHOSLER(at)epri.com)> wrote:

    Thanks, I used to have a mechanic that checked the cable every annual as a matter of course (and  we did change the cable once â€“not sure why.  The bending of the end of the cable at the attachment always seemed to me to be the weak point.

   

   From: owner-teamgrumman-list-server(at)matronics.com (owner-teamgrumman-list-server(at)matronics.com) [mailto:owner-teamgrumman-list-server(at)matronics.com (owner-teamgrumman-list-server(at)matronics.com)] On Behalf Of boxereighty(at)AOL.COM (boxereighty(at)AOL.COM)

 Sent: Thursday, February 20, 2014 11:10 AM

 To: teamgrumman-list(at)matronics.com (teamgrumman-list(at)matronics.com)

   

 Subject: here's a new one

  

 

  

    	  Quote: 	
		   John: 

 

 Here is a link to the AD: 

 

 http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/AOCADSearch/650EF5216513544186256A38005DF83B?OpenDocument 

 

 Here is the AD info: 

 

 Amendment 39-2180; AD 75-09-07 

 

 

 Barry 

 

 

 On Tue, Feb 18, 2014 at 4:11 PM, Hosler, John<JHOSLER(at)epri.com> (JHOSLER(at)epri.com)  wrote: 

 

 

    What is the AD on the cables? 

 

 

 John 

 

 

 *From:*owner-teamgrumman-list-server(at)matronics.com (owner-teamgrumman-list-server(at)matronics.com)  [mailto: 

 owner-teamgrumman-list-server(at)matronics.com (owner-teamgrumman-list-server(at)matronics.com)] *On Behalf Of *FLYaDIVE 

 *Sent:* Tuesday, February 18, 2014 3:51 PM 

 *To:*teamgrumman-list(at)matronics.com (teamgrumman-list(at)matronics.com) 

 *Subject:* Re: TeamGrumman-List: here's a new one 

   

 

 I guess that is why the AD on the cables.  Why hasn't the AD covered the 

 AA5x series? 

 

 

 Better on the ground that in the air and consider how difficult the FAA 

 would have made your life if there was an accident! 

 

 

 Barry 

 

 On Tuesday, February 18, 2014, Gary L Vogt<teamgrumman(at)yahoo.com> (teamgrumman(at)yahoo.com)  wrote: 

  

  I had just finished setting the mixture on a FWF restoration I'm doing on 

 N28819.  You can see a lot of pics of it on the AuCountry Aviation Facebook 

 page. 

 

 

 When I pulled out the mixture to check one last time to make sure the 

 mixture went to cutoff, the cable broke.  That has never happened before. 

 

 

  

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 The same thing happened to me at the end of a flight in my AA1C. My A&P (new to me at the time) said there was an AD on it but that was secondary, the mixture control obviously had to  be replaced since it was broken, AD or not so I didn't research the point. At the time the plane had in the vicinity of 1000hrs TT Â±. So I think the rumors of an improved bracket on 1C models negating the AD might be overstated. The AD (from the above link)  was published and amended in 1975 which was two years before the C model  came to market. Maybe the cable really was improved so was never added to the AD, I'm not going to research it now, but quite obviously based on my experience the cable was still susceptible  to breakage after very low time in service. Even on an AA1C. I put a vernier mixture control on the Lynx and never had another problem in the next 10 years until I sold it. 

 

 Brent Smith 

 N28386/1N1 

  

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 [quote][b]

n32romeo(at)AOL.COM
Guest

Posted: Sat Feb 22, 2014 7:02 pm Post subject: here's a new one

A vernier  mixture cable is the way to go.  The cable is much thicker, and is an alternate means of compliance on the AA-1 500 hour replacement AD.  I like the fine tuning adjustment it provides, and on shutdown, I screw it out till the engine quits and watch for the tach rise.

  Rich

  

  --

BARRY CHECK 6

Joined: 15 Mar 2011
Posts: 738

Posted: Sun Feb 23, 2014 2:48 am Post subject: here's a new one

Rich:

 You said something that is very interesting to me: "The cable is much thicker, and is an alternate means of compliance on the AA-1 500 hour replacement AD."  I have used other sources as proving that the ALCOR cable is approved for the replacement- Have you found the statement AMOC (Other Means Of Compliance) for the cable?  It would make writing up the 337 a lot easier and easier to prove.

 



Barry

 

 



On Sat, Feb 22, 2014 at 10:01 PM,  <n32romeo(at)aol.com (n32romeo(at)aol.com)> wrote:

 [quote] A vernier  mixture cable is the way to go.  The cable is much thicker, and is an alternate means of compliance on the AA-1 500 hour replacement AD.  I like the fine tuning adjustment it provides, and on shutdown, I screw it out till the engine quits and watch for the tach rise.

   Rich

  

  --

n76lima(at)mindspring.com
Guest

Posted: Sun Feb 23, 2014 7:20 am Post subject: here's a new one

The Alcor cable is PMA for all the Grumman singles (plus all other carburetor equipped singles), so no 337 is required.

The 500 hour replacement requirement of the AD is part number specific, so not applicable to the Alcor cable.

Had the AD said "replace mixture cable every 500 hours", then it would not matter what cable was installed.

--Bob Steward

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