Aircraft Fuel Systems
Second directional code change in the source-stated career-ladder sequence; year precision preserved. Verified source wording: “In 1961, the AFSC was changed to 424X0. In 1976, it was again changed to 423X3.”
Source documents (1)
- Aircraft Fuel Systems Career Ladder.
1. Internet Archive full-text OCR around char offset 6,988; governing lineage context verified · source dated September 1, 1985
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