Rapco Inc. has received FAA PMA approval on the RA1H5-1 vacuum manifold dual check valve. It is used on single and multi-engine aircraft with dual vacuum pumps in a pneumatic instrument system. It allows the system to remain operational in the event of a single vacuum pump failure. It is a direct replacement for Airborne 1H5-1. For more information visit www.rapcoinc.com or call (262) 367-2292.