LA30 Control Logic A Module

This document is an Engineering Change Order (ECO) log for the M7711 LA30 control logic module. It details seven specific engineering changes (M7711-00001 through M7711-C0007) implemented between April 1971 and June 1972. The log provides the problem description, the corresponding engineering correction, in-plant effectivity, and, in some cases, field effectivity information for each change.