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Data updated: 16 Jan 2026.
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Document ID:
MIL-HDBK-1559
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Overview
Title:
Numbers, Serial, Aircraft Gas Turbine Engine and Engine Module Assignment of
Scope:
This handbook describes the method of assignment and arrangement of letters and numerals used by the Military Services to identify complete engines and modules (major subassemblies thereof) as to the manufacturer and series in production. The engine/module serial number will be the only one required for assignment and application to the complete engine and modules thereof. This handbook applies to propulsion engines and airborne auxiliary power units.
Status:
Active
Document Date:
25-FEB-2021
Next Review Due:
23-FEB-2031
FSC/Area:
SESS
Doc Category:
Department of Defense Handbook
Responsibilities
Lead Standardization Activity:
SE
Director, Systems Engineering
Preparing Activity:
11
Air Force Life Cycle Management Center - Aircraft Systems
Coordination:
Full
Army Custodian:
AV
Combat Capabilities Development Command, Aviation and Missile Center
Air Force Custodian:
11
Air Force Life Cycle Management Center - Aircraft Systems
Changes to military standards or handbooks issued after August 1, 2003 are incorporated in the modified document.
Revision History
Click on column headings for a description of column content.
Media
Document Part Description
Dist Stmt
Document Date
Pages
Size
Revision A
A
25-FEB-2021
7
176.2 KB
Notice 2 - Validation
A
22-APR-2014
1
2.0 KB
Base Document
A
14-FEB-1997
4
160.7 KB
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Defense Standardization Program
WARNING: UNAUTHORIZED ACCESS TO THIS UNITED STATES GOVERNMENT COMPUTER SYSTEM AND SOFTWARE IS PROHIBITED BY PUBLIC LAW 99-474 (THE COMPUTER FRAUD AND ABUSE ACT OF 1986) AND CAN RESULT IN ADMINISTRATIVE, DISCIPLINARY OR CRIMINAL PROCEEDINGS.