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Mod 58

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ptiller(at)lolacars.com
Guest

Posted: Mon Dec 15, 2008 6:40 am Post subject: Mod 58

Hello All,



My rebuild is now on to the trim tabs......



I understand that Mod 58 was the replacement fitting of the trim tab drive pins.  Does anyone know why?  I've looked in the factory newsletters and can't seem to find the reason for it.



Thanks,



Phil

Visit -  www.EuropaOwners.org

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Brian Davies

Joined: 10 Jan 2006
Posts: 124
Location: uk

Posted: Mon Dec 15, 2008 7:09 am Post subject: Mod 58

Phil,



The original drive pin was welded to a thin steel plate.  One of these pins

became detatched due to fracture of the plate.  The failure was attributed

to the plate repeatedly bending, resulting in a fatigue failure.  The

replacement plate (Mod 5 is thicker and does not bend in service.



Regards



Brian Davies kit 454.



--

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aireupora(at)sbcglobal.ne
Guest

Posted: Mon Dec 15, 2008 7:09 am Post subject: Mod 58

Lead in paragraph on Mod 58

 

An incident occurred to the company demonstrator aircraft G-GBXS where one of the TP16

 

anti-servo/ trim tab drive pins became detached due to the plate it was welded to fracturing. The

 

aircraft was on the ground when the failure occurred, probably during engine starting, and the

 

resulting behaviour of the aircraft in flight was to pitch nose up. The pitch up force was containable by the pilot and a circuit and landing was successfully flown.

 

The fracture was established to have been caused by fatigue due to repeated bending of TP16¢s plate.  The bending that this plate had been subjected to was likely to have been in excess of normal due to ibrations caused by an engine starting problem. The aircraft had completed 426 hours of flight which included 895 take-off and landings. It is important that the cause of unusual vibrations, for example engine starting problems or an unbalanced propeller, are resolved at the earliest opportunity.

--- On Mon, 12/15/08, flyingphil2 <ptiller(at)lolacars.com> wrote:

  	  Quote: 	
		  From: flyingphil2 <ptiller(at)lolacars.com>

Subject: Mod 58

To: europa-list(at)matronics.com

Date: Monday, December 15, 2008, 2:39 PM



 	  Quote: 	
		  --> Europa-List message posted by: "flyingphil2"

<ptiller(at)lolacars.com>



Hello All,



My rebuild is now on to the trim tabs......



I understand that Mod 58 was the replacement fitting of the trim tab drive

pins.  Does anyone know why?  I've looked in the factory newsletters and

can't seem to find the reason for it.



Thanks,



Phil

Visit -  www.EuropaOwners.org

	
	
 [quote][b]

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europabill(at)bellsouth.n
Guest

Posted: Mon Dec 15, 2008 7:13 am Post subject: Mod 58

They beefed up the plate that gets bonded to the trim tab.  I think they 

found one on a plane that was fractured...

Bill

A010 Monowheel Classic

Rotax 912S - 13 years and still building.....



---

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ptiller(at)lolacars.com
Guest

Posted: Mon Dec 15, 2008 7:54 am Post subject: Mod 58

Ah, Ok - that's great, thanks for all your help.



Phil

Visit -  www.EuropaOwners.org

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