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My [plastic] airframe has about 15 seconds. That said, I might use some to shield stuff close to the exhaust.. I'll not use SS since the regular braided oil/fuel lines are more than adequate structurally. I've asked a couple of old grizzled A&Ps and the pretty much agreed that neither one has ever known one to fail. To me, it's pretty much a non-issue ... Jim S.
John Slade wrote:
Aircraft Spruce sells firesleeving that is supposed to give 15 minutes direct flame resistance.
I have that stuff over my oil and coolant lines near the turbo.
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