DEPARTMENT OF THE NAVY
OFFICE OF THE CHIEF OF NAVAL OPERATIONS
2000 NAVY PENTAGON
WASHINGTON DC 20350-2000
OPNAVINST 4442.3E
N4
23 Feb 2023
OPNAV INSTRUCTION 4442.3E
From: Chief of Naval Operations
Subj: GUIDELINES FOR COMPUTING SPARE AIRCRAFT ENGINE AND ENGINE
MODULE RETENTION QUANTITIES
Ref: (a) DoD Instruction 4140.01 of 6 March 2019
(b) OPNAVINST 4614.1H
(c) OPNAVINST 13700.2A
(d) OPNAVINST 5200.35A
Encl: (1) Engine and Module Requirement Development
(2) Modeling Inputs for Baseline Assessment Memorandum Requirement
(3) Modeling Inputs for Retention Requirement
(4) Engine and Module Repair Process and Standards
1. Purpose.
a. To implement policy and procedures governing the requirements development process
for the procurement, budgeting and retention of spare engines and modules.
b. This version incorporates the retail inventory management guidance provided in
reference (a), commonly referred to as the “Super-Reg,” and reference (b). This instruction is a
complete revision and should be reviewed in its entirety.
2. Cancellation. OPNAVINST 4442.3D.
3. Scope and Applicability. This instruction and the attached enclosures will be the definitive
document and foundation for determining and developing inventory requirements for Navy and
Marine Corps engine and module stocking levels at supported locations, as well as quantities to
support the repair pipeline and the total stock level requirements. The outputs governed by this
instruction will be used as a baseline in determining applicable procurement, retention and
disposal budget submissions during the Program Objective Memorandum process.
a. Material Management. Reference (a) prescribes procedures for the uniform management
of Department of Defense material. The Department of Defense components must establish and
pursue the goal of provisioning sufficient support items to meet end item readiness objectives at
minimum investment cost.
