Matronics Email Lists :: View topic

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

No Title

Matronics Email Lists Forum Index -> Yak-List

View previous topic :: View next topic

Author Message

dsavarese0812(at)bellsout
Guest

Posted: Thu Nov 06, 2008 6:44 pm Post subject: No Title

Fred,

 This is a common problem on pre 1989 Yak  52's.  The telltale sign is the blue stain which will show up around the  fuel cavity cover plates at the inboard rear cover primarily.  The reason  on pre-1989 Yak 52's is because these aircraft have a single vent system for all  three tanks; left main, right main and header tank.  1989 and later models  have a duel vent system.  Easily seen by looking on the belly of the  fuselage where 2 vent tubes vs. one can be seen.  Many of these  pre-89 airplanes "puke" fuel when the tanks are over 35-40 liters and the  main tanks are heated by the sun on the wings.  This expansion and  contraction of the fuel tanks stresses and flexes the very thin aluminum,  thus ultimately causing them to crack.  I have seen cracks underneath the  metal bands which hold the tanks in the cavity and also directly in the middle  of the tank just below the fuel tank fill cap.

 Dennis

  

 [quote]   ---

- The Matronics Yak-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Yak-List

Display posts from previous:

	Matronics Email Lists Forum Index -> Yak-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum