Marine Corps · SSN history

959 Airplane Mechanical Instrument Specialist

Appendix B identifies SSN 959 as Airplane Mechanical Instrument Specialist under AR 615-26 of September 1942 and its supplements, and lists SSN 686 as a suggested conversion. That suggestion required review of the individual's Qualification Card against the job specifications, not automatic conversion to 686.

Codes named in this history

Codes without a directory match

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

Documented history

Airplane Mechanical Instrument Specialist

June 1945 is the manual's publication month, not an effective conversion date; no effective date is given for SSN 959.

  • The June 1945 Present Title column is blank, so the earlier title is not established as a current specialty in that manual.
  • The entry does not establish a fixed replacement or specify whether SSN 959 was deleted or fundamentally changed.
Source extraction notes

Predecessor title from the AR 615-26 column: Airplane Mechanical Instrument Specialist. Suggested conversions/remarks: 686. 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.