Marine Corps · SSN history

749 Army Airplane Engine Mechanic (Inspection and Maintenance)

Appendix B identifies SSN 749 as “Army Airplane Engine Mechanic (Inspection and Maintenance)” under AR 615-26, September 1942 and supplements, and lists SSNs 684 and 747 as suggested alternatives. These were not automatic conversions: each affected Marine’s Qualification Card had to be reviewed against the job specifications before selecting a replacement.

Codes named in this history

Codes without a directory match

  • 684 stated by the source. No directory or archive record matches.
  • 747 stated by the source. No directory or archive record matches.

Documented history

Army Airplane Engine Mechanic (Inspection and Maintenance)

June 1945 is the manual’s publication date. No effective date is given for the suggested conversions.

  • The June 1945 Present Title column is blank; the entry does not establish a fixed split into SSNs 684 and 747.
Source extraction notes

Predecessor title from the AR 615-26 column: Army Airplane Engine Mechanic (Inspection and Maintenance). Suggested conversions/remarks: 684, 747. The table gives no row-level effective date. June 1945 is the manual publication date, not an effective conversion date.

Source documents (1)

Reviewed September 24, 2026 against references 3 and 4.

Historical information is drawn from the sources linked above. Classification dates are not personal service dates. Spot an error? Let us know.