ATC Systems
Abstract
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, and in contested environments. 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 that will field system upgrades needed to provide PALC to both legacy aircraft and the Air Wing of the Future (AWOTF). These upgrades will 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 upgrades are likely to result in a new system currently referred to as SPN-XX Brizo Landing System. Development work from the 2013 PALC Roadmap efforts will be transitioned to this common, modern upgrade where able. The fielding of this upgrade will enable the sundown of the obsolete AN/SPN-41 radar landing system. 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 Cyber Security directives and Information Assurance mandates, and authorized for fleet use.
Document Details
- Document Type
- Project
- Publication Date
- Oct 01, 2025
- Source ID
- 3372_0604504N_5_1319_PB_2025
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