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     1. 06:47 PM - Yak-50 fuel tank interconnect tube (apatton2)
 
 
 

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Time: 
06:47:59 PM PST US
Subject: 
Yak-50 fuel tank interconnect tube
From: 
"apatton2" <apatton@alumni.princeton.edu>
      
      
      Hi list,
      I smelled a a *very slight* fuel scent in the cockpit today and went fishing for
      a fuel leak.
      
      It looks like the rigid ~3/4" dia tube that links main & aux tanks has developed
      a crack. I didn't have time to defuel the airplane, but given the leak is coming
      out of the center of the b-nut, I'm worried that the flare at the end of
      the tube is cracked, because the b-nut seems pretty tight.
      
      In general, I was wondering if anyone has replaced this hard-line tube with a fuel-safe
      flex hose, which seems like it would hold up under vibe much better.
      
      There are plenty of AN fitting options available, but it seems amazingly hard to
      find metric versions of this.
      
      Aside from pulling tanks and welding AN fittings to them, has anyone has any luck
      finding replacement metric fittings/hose for these?
      
      Shots of leaky b-nut and hard line tube (when previously removed) attached.
      Thanks,
      Andrew
      
      --------
      Andrew Patton
      Yak-50
      San Francisco, CA
      
      
      Read this topic online here:
      
      http://forums.matronics.com/viewtopic.php?p=491214#491214
      
      
      Attachments: 
      
      http://forums.matronics.com//files/img_2495_192.jpg
      http://forums.matronics.com//files/img_3322_123.jpg
      
      








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