Spares and Repair Parts

The Spares and Repair Parts (LI 0605) program within the Department of the Navy's Aircraft Procurement budget is a critical line item focused on ensuring the operational readiness and sustainment of Navy and Marine Corps aviation platforms. The primary objective of this program is to procure all necessary spare and repair parts for end-items and modifications acquired under various Aircraft Procurement, Navy (APN) Budget Activities, including new aircraft, modifications, and support equipment. The program uses accredited sparing models and detailed maintenance and operational data to determine requirements, supporting both initial provisioning and long-term sustainment.

Initial Spares funding supports the procurement of repairable and consumable parts for new aircraft and systems, as well as modifications and interim contractor support prior to the transition to organic depot maintenance. For FY2026, investments are made in platforms such as carrier and short takeoff/vertical landing variants of tactical aircraft, heavy-lift helicopters, tiltrotor aircraft, maritime patrol aircraft, airborne early warning platforms, and various training aircraft. The objectives include supporting production lead times, ensuring availability of engine and peculiar support equipment spares, and maintaining readiness for new deployments and operational site activations. Funding increases for certain programs are driven by expanded afloat and deployed spares packages, reflecting updated operational requirements and joint global spares pooling.

Spares for Repair of Repairables (ROR) and Spares for Modifications are essential subcategories. ROR funding enables contractor repair of new parts for platforms not yet transitioned to organic depot support, covering a wide range of aircraft and support systems. Spares for Modifications support Engineering Change Proposals and Operational Safety Improvement Programs, ensuring that capability upgrades and safety enhancements are fully supported with appropriate spare parts. This includes multiple rotary and fixed-wing platforms, electronic warfare systems, and maritime patrol aircraft.

Wholesale Supply Inventory is a newly emphasized area in FY2026, with funding allocated to address obsolescence and inventory shortfalls at the wholesale level. This includes Life Time Buys for parts affected by Diminishing Manufacturing Sources and Material Shortages, Lay-In spares to establish initial wholesale inventory, and investments to support variable demand items. The goal is to ensure long-term supportability and shelf-health for critical aviation systems after they reach Material Support Date.

Replenishment Spares are divided into Headquarters Replenishment and Outfitting spares. Headquarters Replenishment, managed by NAVAIR, supports programs including executive transport helicopters, communications relay aircraft, and direct support squadrons, ensuring readiness for high-priority missions such as presidential support and global deployments. Outfitting spares, managed by NAVSUP WSS, fill Aviation and Shore Consolidated Allowance Lists to provide 90-day sustainment levels for deployed air wings and shore-based aviation units. This is vital for maintaining mission capable rates and reducing logistics burdens during extended deployments.

Spares for Training Devices, Support Equipment, and War Consumables are also funded under this line item. These investments ensure the operational availability of training systems, initial sparing for new or upgraded support equipment, and readiness for war consumable items such as bomb racks. Funding for tactical combat training system spares supports aircrew training across multiple platforms and locations, while test and maintenance support spares address new requirements for advanced aircraft.