Almost all rubber hoses have a shelf life. Most are around eight years. The symptoms were fluctuating manifold pressure readings, and the hose completely crumbled when grabbed.
In Case You Missed it
Smart Transponders
The Experimental market gets few breaks when it comes to transponder and ADS-B requirements.
Around the World and Over Both Poles
Sky Polaris-a historic flight in an RV-8, part 1.