Fred,

 

Arrrrrgghhhh..........

 

In the early days of operating my 320 I had to replace a hydraulic pressure switch and when I undid the flared end fitting nut on the tubing that connected it to tee from the pump I found the flare to be holding on by its fingernails.  Yes, it was a poor flare end that was working its way out from under the capturing sleeve.  It was one of the first flares I had ever made in the kit building process.  Fortunately, it was also the worst as the rest have been flying for 14 years - that is not to say that they all meet the proper specs.

 

Thanks for the analysis.  Gulp, all of my lines were cut with a tube cutter.  I think they all were filed and reamed but not filed as far as the article recommends. 

 

BTW, I finally got rid of all the tubing I flared before putting on the sleeve and nut - These were the ones that just wouldn't work if they were a half inch shorter.

 

Grayhawk

 

In a message dated 6/7/2010 5:33:11 A.M. Central Daylight Time, marv@lancair.net writes:

Posted for "Frederick Moreno" <frederickmoreno@bigpond.com>:

 The article attached is the outcome of an investigation into a gear up
 incident in Australia and will be published in the Australian experimental
 aircraft magazine Air Sport.  
 
 
 
Fred Moreno
 

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