A320 GT40 Display Generator Engineering Change Order Log

This document is an Engineering Change Order (ECO) log for the A320 GT40 Display Generator. It details five specific technical revisions (A320-B0001 through A320-C0005) issued between February and September 1973.

The document describes various hardware modifications, including:

• Reworking etch patterns and wiring.
• Updating circuit schematics and parts lists.
• Correcting errors in vector lengths by adding resistors and capacitors.
• Replacing specific hardware components (Kep nuts).
• Addressing component characteristic variations for gain adjustments.
• Correcting drawing errors in schematics.

Each entry specifies the nature of the problem, the required corrective action, and instructions regarding in-plant and field implementation.