Other
Electrical machines and apparatus, having individual functions, not specified or included elsewhere in this chapter; parts thereof: > Parts: > Assemblies and subassemblies for flight data recorders, consisting of two or more parts or pieces fastened or joined together: > Other
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Products classified under HTS 8543.90.35.00
Flight Data Recorder Processor Assembly
This subassembly integrates the central processing unit, memory modules, and signal conditioning circuits for a flight data recorder (FDR). It falls under HTS 8543.90.35.00 as it consists of two or more parts fastened together specifically for FDR use, enabling real-time data acquisition from aircraft sensors.
FDR Data Acquisition Unit Subassembly
A joined assembly of analog-to-digital converters, multiplexers, and interface boards designed for flight data recorders to capture parameters like altitude and speed. Classified under 8543.90.35.00 due to its multi-part construction tailored for FDR functionality in aircraft black boxes.
Flight Data Recorder Crash-Survivable Memory Module Assembly
This ruggedized subassembly combines solid-state memory chips, protective enclosures, and mounting hardware for FDRs to retain data post-crash. It qualifies for HTS 8543.90.35.00 as a fastened multi-part unit dedicated to flight data recording in high-impact environments.
FDR Interface and Power Supply Subassembly
An integrated unit of power regulators, ARINC 429 interfaces, and connectors joined for flight data recorders to ensure stable operation from aircraft power buses. Falls under 8543.90.35.00 for its specific multi-part design for FDR systems.
Flight Data Recorder Sensor Input Board Assembly
Subassembly featuring signal amplifiers, filters, and input terminals fastened together for processing aircraft sensor data in FDRs. Classified in HTS 8543.90.35.00 as it meets the criteria for joined parts dedicated to flight data recorder assemblies.
FDR Synchronization and Timing Module Subassembly
A multi-component assembly of crystal oscillators, GPS sync boards, and timing controllers for precise timestamping in flight data recorders. It is covered by HTS 8543.90.35.00 due to its fastened parts designed exclusively for FDR time synchronization.
Flight Data Recorder Enclosure and Mounting Assembly
Joined crash-proof housing, shock mounts, and retention brackets forming a protective subassembly for FDR internal components. Qualifies under 8543.90.35.00 as parts fastened for flight data recorder integration in aircraft.
FDR ARINC 717 Data Interface Subassembly
Assembly of digital protocol converters, buffers, and connectors compliant with ARINC 717 standards for FDR communication with aircraft systems. Classified under HTS 8543.90.35.00 for its multi-part FDR-specific construction.
Flight Data Recorder Thermal Protection Assembly
Subassembly of insulation layers, heat shields, and mounting frames joined to protect FDR electronics from fire exposure up to 1100°C. Meets HTS 8543.90.35.00 as a specialized fastened assembly for flight data recorders.
FDR Quick Access Recorder Interface Assembly
Multi-part subassembly including USB/Ethernet ports, encryption modules, and extraction circuitry for rapid FDR data download post-flight. Falls under 8543.90.35.00 due to its integrated design for flight data recorder systems.