Kevin, et al,

 

I did a NTSB search from 1990 to present for Lancair accidents in Oregon - there were 11 and none involved brake line failure.

 

I flew my 320 from 1996 until 2013 with Nylaflow brake lines that arrived, along with fittings, with my 1989 kit (over 1200 landings).  However, the lines in the stub wing to the brake were sheathed with Tygon tubing to protect against nicks and abrasion and Adele clamps were used to firmly support the lines about 6-8 inches from the brake housing by screwing the clamps to the rear of the wheel casting. 

 

For all I know, the buyer is still using those lines. 

 

It is possible that unsupported lines flop around in the wind when the gear is out and the line is weakened at the brake-to-line fitting

 

Scott Krueger  

 

I think the big problem is the plastic/rubber hose.  You really don't want it to fail on landing when you are really trying to stop.  I believe a Lancair brake line failed somewhere in Oregon, airplane went off the runway and smashed into a tree, killed everyone.

Using Nyflow for brakes is kinda creepy for me...

Kevin

________________________________________
From: Lancair Mailing List [lml@lancaironline.net] On Behalf Of John Cooper [snopercod@comporium.net]
Sent: Wednesday, May 21, 2014 1:43 PM
To: Lancair Mailing List
Subject: [LML] Re: Observations on Limited Life Items

Chris--

I'll be using the synthetic MIL-PRF-83282 brake fluid. It has a "Fire Point" of 490º F, as compared to 360º F (?) with the standard MIL-PRF-5606. The synthetic is approved for use with BUNA-N.

John,
That could have been ugly.  A friend of mine with a Glasair had a rejected takeoff on a short runway.  As he turned off the runway, his plastic brake line melted and the 5606 hit is brake disk.


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