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The aluminum line on the Liv that had the engine fire, was between the scavenge pump and a tee that serviced both turbo return lines.  The consensus was that the flare pulled out of the fitting due to vibration and the suspended weight of the two lines and fittings.  IMHO Keep aluminum lines and fittings out of the firewall compartment on anything critical.

In-line fuel filters in the cabin are not desireable.  The tanks must be drained to change or clean them and when the filter is pulled out it deposits fuel inside the cabin.  BAD THING...

Mike DeHate

LML website:   http://www.olsusa.com/Users/Mkaye/maillist.html
LML Builders' Bookstore:   http://www.buildersbooks.com/lancair

Please send your photos and drawings to marvkaye@olsusa.com.