Aircraft spruce harness. The popular Sport Harness kit from Hooker is ideal for a wide variety of experimental aircraft. Aircraft Spruce is a worldwide distributor of certified and homebuilt aircraft supplies. Aircraft Spruce ® supplies components for a wide variety of homebuilt aircraft including the Lancair, Vans Aircraft, and Cozy, as well as factory built parts for Cessna, Piper, Beech, and Mooney. Although many of the harnesses are standard and stocked on the shelves for same day shipping, we also offer our customers custom-made harnesses to specific lengths for each wire you will need during installation. One new addition to the company is the wiring harness shop. . FAA-PMA approved Dual Slick Harnesses by Champion are built to handle the maximum spark energy produced, while delivering more energy than is required by the spark plugs - even during emergency full-power engine operation. The standard set includes one 1-3/4" military style seat belt, one 1-3/4" military style shoulder harness, one 1-3/4" crotch strap, and one pad set and yoke assembly for front seat. Aug 1, 2016 ยท When you’re building your own airplane, cutting down on wasted time is as good as gold, and Aircraft Spruce prides itself on supplying just that brand of gold.