ETIN A21-2000429 TO INCORPORATE NON-PRECISION OPS SCALING VIA GAMA ARM 429 LPN INTERFACE WHICH MEETS REQUIREMENTS OF TSO C129A AND AC 20-130A. THE EMS SYSTEMS ARB CROSS-COUPLED TO EITHER THE PILOT OR COPILOT EELS FOR DISPLAY AND NAVIGATION. THE EFTS CONVERTS THE DIGITAL TO ANALOG OUTPUTS AND PROVIDES ALL LATERAL STE