What project 3372 buys
The Navy's Precision Approach and Landing System Capability (PALC) and Landing System Upgrade Program (LSUP) are essential to retain the United States Navy's capability to perform safe and expeditious aircraft landings aboard CVN and LHA/D class vessels during adverse weather and night conditions. The Navy's PALC requirements, originally identified in the 2013 PALC Roadmap, necessitated Life Cycle Extension upgrades to all three legacy precision landing systems; AN/SPN-35, AN/SPN-41 and AN/SPN-46. The 2013 PALC Roadmap and subsequent LSUP block upgrades addressed obsolete technology developed and fielded over 30 years ago. In 2022, an updated PALC Roadmap was approved and planned to field system upgrades needed to provide PALC to both legacy aircraft and the Air Wing of the Future (AWOTF). These upgrades planned to modernize the AN/SPN-35 and AN/SPN-46 Radar Landing Systems (RLS), as well as insert common sub-systems that minimize future sustainment costs. These development efforts were planned to result in the fielding of a new system, AN/SPN-51, that would replace legacy systems; AN/SPN-35, AN/SPN-41, and AN/SPN-46. In Q1 FY 2025, the 2022 PALC Roadmap update and development efforts were rescinded, thus cancelling AN/SPN-51. Cancellation of the development program necessitates continued research and development of legacy system modifications to ensure sustainment consistent with the 2013 PALC Roadmap requirement. Without these efforts, the Navy estimates complete loss of Precision Approach Radar (PAR) and Automatic Carrier Landing System (ACLS) capabilities within 10 years. Successful development and fielding of all capabilities is essential to giving fleet users relevant equipment, compliant with Cyber Security directives and Information Assurance mandates, and authorized for fleet use.
- Product Development
- Support
- Test and Evaluation
- Management Services
Project 3372 funding, FY2025–FY2031
Prior years are actuals, the budget year is the request, and the outyears are the FYDP plan. Estimate types are colored and never summed into one figure. Projects carry the full five-year plan; the activities inside them stop at the budget year.
| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 50.6 |
| FY2026 | Enacted | 14.3 |
| FY2027 | Request | 14.5 |
| FY2028 | Outyear | 14.7 |
| FY2029 | Outyear | 15.0 |
| FY2030 | Outyear | 14.4 |
| FY2031 | Outyear | 14.6 |
2 accomplishments / planned programs
The R-2A exhibit — the only level of the budget that describes work that has not happened yet. Activities carry the prior, current and budget year only, no five-year plan. 1 of them describes FY2027 work in enough detail to have its own page; the rest are shown here in full. Coverage is partial across the corpus, so count activities, never total them.
Complete system design of AN/SPN-41 CCA and FPGA upgrades in support of prototype material procurement and build. Development of subsystem test plans ahead of subsequent qualification, ground, and flight testing efforts. Complete preliminary design of AN/SPN-46 Unit 6 and 7 subsystem mod kit supported by component material procurements…
Read the FY2027 plan →FY2026 plans — current year Previous planned efforts (e.g. Critical Design Review (CDR), SIL updates and continued development of AN/SPN-51) are cancelled in alignment with overarching AN/SPN-51 cancellation.
Named performers on project 3372
Performers named in the R-3 exhibit under this project. Share is of the project's whole FY2027 R-3 total — the same denominator the program-element split uses, so the two read on one scale and will not sum to 100% when unnamed or government work is in the mix. Budget-justification contract funding, not obligations.