Key Punch Operator
5 December 1949 is the regulation's date; no separate effective date or completion deadline is stated.
- The supervisor assignment to 3400 is unusual for the listed job title, but it is explicitly printed and should not be generalized to all 0272 positions.
Source extraction notes
Paragraph 4 rescinds 0272. Across the appendix, ordinary key-punch operator positions convert to 4272; printed p. 29 line 26 instead maps a Key punch supervisor position from 0272 to 3400, while line 31 maps a Key punch operator to 4272. Preserved as one position-dependent split in first-source order. The supervisor-to-3400 cell is clear but is a source-visible anomaly relative to the occupational title pattern; it is transcribed, not corrected. Successors are numeric MOS codes; the predecessor remains in the SSN namespace.
Source documents (3)
Reviewed September 23, 2026 against references 1, 2 and 3.
- SR 650-120-30, Career Guidance: Machine Accounting Career Field, 5 December 1949
1. printed p. 2, paragraph 4, rescinded MOS 0272 Key Punch Operator · source dated December 5, 1949 · cited by the explanation
Open source document (opens in a new tab)4.SR 650-120-30, Career Guidance: Machine Accounting Career Field, 5 December 1949 · event transcription · docs/legacy-data/army-ssn-mos-bridge.jsonl:2; printed p. 2, paragraph 4, rescinded MOS 0272 Key Punch Operator
Open source document (opens in a new tab) - SR 650-120-30, Career Guidance: Machine Accounting Career Field, 5 December 1949
2. appendix T/O & E change sheet, printed p. 20, key-punch operator rows converting 0272 to 4272 · source dated December 5, 1949 · cited by the explanation
Open source document (opens in a new tab) - SR 650-120-30, Career Guidance: Machine Accounting Career Field, 5 December 1949
3. appendix T/O & E change sheet, printed p. 29, lines 26 and 31 · source dated December 5, 1949 · cited by the explanation
Open source document (opens in a new tab)