Avionics Report

September 2010 Issue

GPSS Retrofits: Automation to the Max

Digital roll steering converters can bring old auto-pilots into the modern age, but to get the most out of them, you need WAAS GPS.

Nearly every proposal for a new autopilot installations—which these days means S-TEC upgrades—should include a GPSS option. And optional is the key word because unless you buy a flagship S-TEC 55X autopilot, GPSS won’t be included with the base system. For most customers looking to upgrade GPS and autopilot equipment, GPSS hardware is grossly misunderstood. Although hardly a major system, GPSS is considered an accessory that plays a huge part in total autopilot automation. Impressively, it emulates the tight performance found with big-airplane inertial navigational systems.

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