Marine Corps · SSN history

549 Airplane Radiator Repairman

Appendix B identifies SSN 549 as Airplane Radiator Repairman under AR 615-26 of September 1942 and its supplements, and suggests SSNs 555 or 747 as alternatives. These were not automatic conversions: each Marine’s qualifications had to be reviewed against the job specifications before selecting a replacement.

Codes named in this history

Codes without a directory match

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

Documented history

Airplane Radiator Repairman

June 1945 is the manual’s publication date; no effective date for a change to SSN 549 is given.

  • The June 1945 Present Title entry is blank, and the entry does not establish a fixed split into both suggested specialties.
Source extraction notes

Predecessor title from the AR 615-26 column: Airplane Radiator Repairman. Suggested conversions/remarks: 555, 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.