Brazilian Air Force Photo U.S. Air Force Photo by SSgt. Jeffrey Clonkey NorthropGrumman Photo More than 30 countries fly the F-5 as a front line fighter, trainer or reconnaissance aircraft including Brazil (top left) and Thailand (bottom left). Right, a worker at NorthropGrumman’s St. Augustine Aircraft Integration Center conducts depot maintenance on a U.S. Navy F-5. T he NorthropGrumman F-5 Tiger II is a highly maneuverable, capable and reliable fighter used by the U.S. Navy and Marine Corps and more than 30 countries worldwide as a front line fighter, trainer, or reconnaissance aircraft. NorthropGrumman, the original equipment manufacturer of the F-5 Freedom Fighter series, has the knowledge and expertise to sustain, extend the life, and upgrade any F-5 model flying today. To ensure the F-5 continues to be relevant, NorthropGrumman offers various capability enhancement packages that include avionics upgrade and airframe updates, phased depot maintenance, and maintenance personnel training packages. Maintenance and training activities can be performed either at the St. Augustine Aircraft Integration Center in Florida or in the host country. Avionics Enhancement The Block I Avionics upgrade package was developed for the U.S. Navy to enhance the F-5 navigational capabilities and address obsolescence issues. The new fiber optic technology of the Embedded Global Positioning System/Inertial Navigation System, or EGI, is the same as that used in the F-16. NorthropGrumman upgraded all of the U.S. Navy and Marine Corps F-5N aircraft with the Block I avionics upgrade at St. Augustine. The Navy avionics upgrade includes: • Navigation Subsystem: Replace the existing LN-33 Inertial unit/Airborne Heading-Altitude Reference System (AHARS) with an LN-260 EGI with an embedded GPS available in both Precise Positioning Service (PPS) and Standard Positioning Service (SPS) capabilities. • Control and Display Subsystem: Upgrade the control and display subsystem to improve display and operational capability. • Cockpit Display Unit (CDU): Replace the CRT Radar Video with a Multi-Function Color Touch-Screen Smart Display which includes the software to provide control and functionality of the inertial navigation and radar systems. • Navigation Control Panel: Install Navigation Control Panel to provide for power switching and data upload capability for the LN-260 and CDU. The Block I installation provides the baseline architecture for additional avionics upgrades including an All Aspect Digital Radar; Radar Warning Receiver set; Helmet-Mounted Display; Hands-On Throttle and Stick (HOTAS); Mission Computer; Head-Up Display (HUD); Miniaturized Digital Air Data Computer; Stores and Weapons Management; and Data Link. The avionics enhancements can support current and future weapons capabilities tailored to meet customer requirements. The higher reliability and reduced maintenance man-hours can offset the cost of avionics upgrades. Avionics upgrades feature an open architecture environment that allows for future upgrades that can be customized to meet specific customer requirements. NorthropGrumman’s F-5 Tiger upgrades are compatible with
U.S. hardware, weapons and communications, and leverage an established NorthropGrumman support infrastructure. Airframe Enhancement The St. Augustine Aircraft Integration Center offers cuttingedge upgrades and conversions for F-5 aircraft, including an F-5E to F-5F conversion. NorthropGrumman has teamed with industry leaders to form a world-class capability to ensure all aircraft upgrades are stateof-the-art technology and easily maintained and relevant for the next 20 years. When the U.S. Navy purchased low hour single seat Swiss F-5s, NorthropGrumman conducted the depot maintenance and modifications necessary to meet Navy specifications. As part of the Navy’s aircraft integration, three of the single seat Swiss F-5E models were converted to the dual-seat F-5Fs. To make this transformation, the front fuselage section of the Navy F-5F was installed on the low flight hour Swiss F-5E. The resulting aircraft produced a U.S. Navy F-5F aircraft with significantly lower structural hours. Component Enhancement NorthropGrumman offers a number of component enhancements designed to reduce maintenance costs, increase aircraft availability, operational effectiveness, and pilot safety. Components offered include: • Miniature electronic air data computer • All aspect digital radar • Communication and navigation upgrades • Survivability upgrades • Automatic flight controls Royal Jordanian F-5 two-ship formation. • Anti-skid brakes • Night vision capability • Engines • Onboard Oxygen Generating System (OBOGS) • Ejection seat • Environmental control upgrades • Weapons integration Depot Maintenance NorthropGrumman’s St. Augustine Aircraft Integration Center is the only F-5 depot maintenance facility in the United States. The integration center conducts depot maintenance for the U.S. Navy F-5 program which can be tailored for international F-5 fleets. Routine maintenance and enhancements ensure viability of the F-5 for the U.S. Navy and air forces around the world for the next 20 years and beyond. The center’s maintenance teams can also provide in-country maintenance and training (formal and on-the-job training), including training certifications. All F-5 depot work to date has been accomplished on schedule and on cost. The Aircraft Integration Center currently offers: • Full depot overhaul • Avionics upgrades • Structural enhancements • F-5E to F-5F conversions • Crash damage repair • Canopies and windshields Total life cycle sustainment packages are also available based on the needs of the customer. Royal Jordanian Air Force Photo Photo courtesy of Arpingstone Swiss Air Force Northrop F-5E Tiger II of the Patrouille Suisse aerobatics team taxis after landing at the Royal International Air Tattoo, U.K.