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XPDR trouble, what to look for ?

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Gilles.Thesee(at)ac-greno
Guest

Posted: Fri Sep 14, 2007 11:49 am Post subject: XPDR trouble, what to look for ?

Hi Bob and all,



Two buddies are reporting a recent XPDR trouble with their Microair 

T2000SFL transponder with an ACK A30 encoder, installed with the 

supplied harness and antenna.



After 50 trouble-free hours, the controller reported not receiving all 

infos from their transponder, then shortly after she told them she got 

no response at all.

I made a quick inspection of their coaxial connections, but did not find 

anything. The XPDR does not display any warning or error.

I would appreciate any advice as to where to further investigate, and 

whether a XPDR fault is probable.



Thanks in advance,



Regards,

-- 

Gilles Thesee

http://contrails.free.fr

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Doug Gray

Joined: 10 Jan 2006
Posts: 112
Location: Sydney, Australia

Posted: Fri Sep 14, 2007 1:19 pm Post subject: XPDR trouble, what to look for ?

Bonjour Gilles,



Firstly check the obvious (as you probably already have). That is test

the co-ax lead for good continuity on core and shield, check power and

connections at the connector, plus the connector security.



If you still have a problem, get up early one morning and telephone

Microair for their recommendation.  I'd be surprised if you had a poor

response.



Do let the list know of the outcome.



Doug Gray

.Sydney, Aust.

do not archive

On Fri, 2007-09-14 at 21:45 +0200, Gilles Thesee wrote:

 	  Quote: 	
		   

 

 Hi Bob and all,

 

 Two buddies are reporting a recent XPDR trouble with their Microair 

 T2000SFL transponder with an ACK A30 encoder, installed with the 

 supplied harness and antenna.

 

 After 50 trouble-free hours, the controller reported not receiving all 

 infos from their transponder, then shortly after she told them she got 

 no response at all.

 I made a quick inspection of their coaxial connections, but did not find 

 anything. The XPDR does not display any warning or error.

 I would appreciate any advice as to where to further investigate, and 

 whether a XPDR fault is probable.

 

 Thanks in advance,

 

 Regards,

- The Matronics AeroElectric-List Email Forum -

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Gilles.Thesee(at)ac-greno
Guest

Posted: Fri Sep 14, 2007 1:36 pm Post subject: XPDR trouble, what to look for ?

Doug,



Thank you for responding.



 	  Quote: 	
		    test the co-ax lead for good continuity on core and shield,


	


Did not do yet, we were on a distant airfield.



 	  Quote: 	
		    check power and

 connections at the connector, plus the connector security.

   


	


Done. The transponder displays as usual.



 	  Quote: 	
		   If you still have a problem, get up early one morning and telephone

 Microair for their recommendation.  I'd be surprised if you had a poor

 response.

   

Thank you for your input.
	


BTW, are you the Doug Gray of  "3 GPS legs" method fame ?



Best regards,

-- 

Gilles

http://contrails.free.fr

- The Matronics AeroElectric-List Email Forum -

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Doug Gray

Joined: 10 Jan 2006
Posts: 112
Location: Sydney, Australia

Posted: Fri Sep 14, 2007 2:19 pm Post subject: XPDR trouble, what to look for ?

Gilles,

Yes, I'm the culprit on the method.

Regarding the transponders, if there <is> a latent defect in the product

the manufacturer should own the problem.

Regards,

Doug

On Fri, 2007-09-14 at 23:36 +0200, Gilles Thesee wrote:

 	  Quote: 	

 Doug,

 Thank you for responding.

 >  test the co-ax lead for good continuity on core and shield,

 Did not do yet, we were on a distant airfield.

 >  check power and

 > connections at the connector, plus the connector security.

 >   

 Done. The transponder displays as usual.

 > If you still have a problem, get up early one morning and telephone

 > Microair for their recommendation.  I'd be surprised if you had a poor

 > response.

 >   

 Thank you for your input.

 BTW, are you the Doug Gray of  "3 GPS legs" method fame ?

 Best regards,

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sonex76(at)velocity.net
Guest

Posted: Fri Sep 14, 2007 2:27 pm Post subject: XPDR trouble, what to look for ?

You problems maybe Mode S related. Check out the Microair website.

All of these transponders need to be updated to Revision 7 which is

fairly pricey. I was quoted $445.00 US + shipping from Erie Aviation,

an authorized repair shop.



Dick Fisher

sonex76(at)velocity.net

---

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Gilles.Thesee(at)ac-greno
Guest

Posted: Fri Sep 14, 2007 2:49 pm Post subject: XPDR trouble, what to look for ?

Dick Fisher a écrit :

 	  Quote: 	
		  

 Check out the Microair website.

 All of these transponders need to be updated to Revision 7 which is

 fairly pricey. I was quoted $445.00 US + shipping from Erie Aviation,

 an authorized repair shop.


	


Dick, Doug and all,



Of course I'll make the necessary coax verifications, then contact the 

dealer where they got their transponder.



Just checked the Microair website. I'm a bit concerned for my buddies.

I'm not aware of any Mode S ground installation in the Lyon area 

(France) where they have been having their problem, but who knows.



What surprises me is that Microair talks about charging the client for a 

simple software update to correct a built-in defect.

The software update should be free once you produce your XPDR S/N, or 

performed under warranty by the dealers.



Will keep you posted,

Best regards,

-- 

Gilles

http://contrails.free.fr

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Gilles.Thesee(at)ac-greno
Guest

Posted: Fri Sep 14, 2007 3:01 pm Post subject: XPDR trouble, what to look for ?

Gilles Thesee a écrit :

 	  Quote: 	
		   What surprises me is that Microair talks about charging the client for 

 a simple software update to correct a built-in defect.


	


Well, reading more carefully, there is also a hardware mod.



Best regards,

-- 

Gilles

http://contrails.free.fr

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