DEPARTMENT OF THE NAVY
OFFICE OF THE CHIEF OF NAVAL OPERATIONS
2000 NAVY PENTAGON
WASHINGTON DC 20350-2000
OPNAVINST 4400.10D
N41
22 Mar 2018
OPNAV INSTRUCTION 4400.10D
From: Chief of Naval Operations
Subj: POLICIES FOR INTEGRATED LOGISTICS OVERHAULS AND PHASED
MAINTENANCE REVIEWS
Ref: (a) Navy Modernization Process Management and Operations Manual (NMP-MOM),
Rev 4 of 19 January 2018
(b) DoD Instruction 8500.01 of 14 March 2014
(c) SECNAVINST 3052.2
1. Purpose
a. To provide simplified policy and responsibilities for support of the integrated logistics
overhaul (ILO) and phased maintenance review program, which are both integral to achieving
responsive weapon system and equipment support.
b. This revision updates responsibilities, site locations, and alignment, and removes
redundant integrated logistics support (ILS) functions. This instruction is a complete revision
and should be reviewed in its entirety.
2. Cancellation. OPNAVINST 4400.10C.
3. Applicability. The provisions of this instruction are applicable throughout the Department of
the Navy.
4. Background
a. The ILO concept, evolved from the fleet supply operations assistance program, is a self-
help program to improve shipboard repair parts support. The administration of the ILO concept
has evolved, but the purpose remains the same. When regional maintenance centers (RMC) were
established in 2003 to 2004, all ILO sites initially fell under the RMCs. Since then, five ILO
sites, located at Southwest RMC, San Diego, CA; Southeast RMC, Mayport, FL; Mid-Atlantic
RMC, Norfolk, VA; Forward Deployed RMC, Manama, Bahrain; and Forward Deployed RMC,
Rota, Spain, have re-aligned under the supporting Naval Supply Systems Command
(NAVSUPSYSCOM) fleet logistics center (FLC). The ILO sites located at Hawaii RMC, Pearl
Harbor, HI, and Northwest RMC, Puget Sound, WA, have remained aligned with the shipyards
under the purview of Naval Sea Systems Command (NAVSEASYSCOM). U.S. Naval Ship
Repair Facility and Japan RMC, Yokosuka, and its detachment in Sasebo, have remained under
the purview of Commander, U.S. Pacific Fleet (COMPACFLT).
