F-16 Modifications

The F-16 Modifications program is a major line item in the Air Force's FY 2026 budget request, supporting the continued modernization and sustainment of the F-16 Fighting Falcon fleet. As the F-16 comprises approximately 40% of the USAF's fighter fleet, with over 830 aircraft, these modifications are essential to maintaining operational relevance, safety, and interoperability for both domestic and international missions. The program's objectives are to address emerging threats, comply with mandated security upgrades, and extend the service life of the aircraft, ensuring viability into the 2040s. Funding supports upgrades to avionics, radar, communications, electronic warfare, and training systems. Procurement and installation are managed across active, Guard, and Reserve components.

The MMC and Display Generator Upgrade aims to enhance the F-16's core mission computer and display systems. This modification increases high-speed data throughput, memory, and network capabilities, enabling full utilization of Active Electronically Scanned Array (AESA) radar and advanced cockpit displays. The upgrade also resolves issues related to symbol freezing and processing constraints, improves mission data transfer, and addresses Diminishing Manufacturing Sources (DMS) concerns. Installation is performed at depot and field levels, with Group A and B kits procured from multiple manufacturers, supporting both active and Guard units.

The F-16 Legacy Structural Service Life Extension Program (SLEP) is designed to extend the operational life of Block 40-52 F-16s beyond 8,000 Equivalent Flying Hours. This involves depot-level replacement or repair of life-limited structural components identified during Full Scale Durability Testing. The program targets 350 aircraft, with installations at Ogden Air Logistics Complex, Pacific Air Forces, and U.S. Air Forces in Europe. SLEP is critical to preventing structural degradation and supports compliance with financial audit requirements under Title 10 U.S.C. Chapter 9A.

The Comm Suite Upgrade (CSU) addresses multiple mandates, including Cryptographic Modernization, secure voice communications, anti-jam capabilities, and integration with the Mobile User Objective System (MUOS). The upgrade enhances cockpit audio, increases pilot situational awareness, and supports secure tactical networks as directed by the National Security Agency and Joint Chiefs of Staff. CSU is being fielded across Block 30/32/40/42/50/52 aircraft, with installation at depots and contract field teams, and includes support for flight testing and technical data updates.

HFLCC AGCAS (Hybrid Flight Control Computer Auto Ground Collision Avoidance System) is a safety-driven modification to prevent Controlled Flight Into Terrain (CFIT) accidents. It uses terrain databases and predictive algorithms to automate aircraft recovery in case of pilot incapacitation. The program also includes Secure Mission Data System, B-Multiplexer, and Digital Stand-by Attitude Indicator upgrades for select aircraft, addressing both safety and DMS issues. Installations are managed by contractors at Hill AFB, with field and depot-level implementation.

AIFF Mode 5 (Advanced Identification Friend or Foe) provides hardware and software upgrades to comply with NSA mandates for secure identification and fratricide prevention. The program replaces legacy interrogator transponders, supports cryptographic modernization, and is currently in the developmental phase for DMS updates. It covers 172 Post-Block aircraft and includes integration with new hardware and firmware, with installation managed by key manufacturers.

AESA Radars (Active Electronically Scanned Array) represent a significant capability improvement, replacing legacy radars with advanced AESA systems across all F-16 blocks. The upgrade enhances air-to-air and air-to-ground performance, reliability, and maintainability. It includes procurement of Center Display Units, High-Speed Data Network components, Remote Interface Panels, Radome Shrouds, and Sensor Integration Units, supporting full digital radar functionality and sensor deconfliction. Principal contractors manage installation at depots and field teams. The AESA program supports both Air National Guard and Active Duty units, ensuring the F-16 remains a viable platform for joint and coalition operations.