Dual Sandel SN4500 EHSI Installation in Lear 35A

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Working in conjunction with the team at Jet City Engineering, Five Rings Aerospace have certified the installation of dual Sandel SN4500 EHSIs in a Learjet Model 35A.  This modification was carried out as part of a major avionics upgrade which included installation of a Sandel ST3400 TAWS/RMI (Terrain Awareness Warning System) certified for Class A TAWS operations.