Ground Radio Maintenance · Converted to 2E1X3, effective 1993
The official report cover explicitly labels 2E1X3 as formerly AFSC 304X4. The exact day was not stated in the located passage, so effectiveTo is year-only. Confidence: high for lineage; medium for date precision.
Sources
- Ground Radio Communications, AFSC 2E1X3 (Formerly AFSC 304X4) (Cover; Introduction, report p. 1)