During an engine lookaround inspection after an oil/filter change, I found a potential serious problem.  The screendoor type spring under cylinders #1 and #3 that holds the baffling tight against the outer cylinder barrels was chaffing against the under side of the #1 cylinder oil drain line.  A sizable chunk of metal had been gouged out of the drain line.  I can only guess how much more time before a hole was rubbed through and the oil would start leaking out.  Although not a pressure line, it would cause a serious leak and plenty of down time.  I safety wired the spring down away from the drain line as a first time fix.

 

I'm suggesting Lancair flyers take a look at this.

 

George Shattuck

LNC2, 1500 hrs.