Description
Technical Manual Change 1 (TM 9-1220-203-35P) for M13, M13A1, M13A1C, M13A1D, M13A2, and M13B1C Ballistic Computers October 1966 FSN 1220-344-4678
This listing is for Change 1 to Technical Manual TM 9-1220-203-35P, dated October 1966. The manual covers the M13, M13A1, M13A1C, M13A1D, M13A2, and M13B1C ballistic computers.
Change 1 supplements the February 1963 field and depot maintenance repair-parts and special-tools publication. It should be kept with that base manual so the parts-reference set includes the later update.
Historical Significance
This change notice comes from the Cold War period, when ballistic computers were part of U.S. Army fire-control maintenance programs. Its supplied model list reflects the related M13-series configurations supported within this publication family.
Military change notices preserve revisions issued after a base manual entered circulation. Dated more than three years after the February 1963 edition, this Change 1 notice forms part of the later publication record for the field and depot repair-parts manual.
Change 1 and the 35P Base Manual
This publication is a Change 1 update, not the complete TM 9-1220-203-35P base manual. It is intended for use with the February 1963 repair-parts and special-tools publication. The exact replacement pages and technical changes should be confirmed from the physical notice.
What This Manual Covers
The supplied Change 1 identification lists update coverage for these ballistic computer models:
- M13 (FSN 1220-344-4678)
- M13A1 (FSN 1220-546-9735)
- M13A1C (FSN 1220-774-9445)
- M13A1D (FSN 1220-676-2182)
- M13A2 (FSN 1220-856-9454)
- M13B1C (FSN 1220-870-6274)
Key Features
- Change 1 to TM 9-1220-203-35P
- Dated October 1966
- Updates the February 1963 field and depot parts publication
- Supplied identification lists six M13-series ballistic computer models
- Supplemental change notice rather than the complete base manual
Why This Manual Matters
This change notice helps complete the publication history of TM 9-1220-203-35P. It is useful for collectors and researchers who want the original parts manual together with its later update.
As period technical documentation, it also supports research into Cold War Army fire-control equipment, field and depot repair-parts publications, and manual revision practices.
About This Manual
This listing is for Change 1 to TM 9-1220-203-35P only. It is not the complete February 1963 base manual. No ballistic computer, test equipment, tools, repair parts, or other manuals are included unless specifically stated.
Ideal For
This manual is a strong fit for:
- U.S. Army technical manual collectors
- M13-series ballistic computer researchers
- Field and depot maintenance reference collections
- Military repair-parts manual collectors
- Cold War fire-control reference libraries
- Collectors completing a TM 9-1220-203-35P manual set
Approx length 8", Approx width 10", Approx height .1", Approx weight .2lbs.
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