Printed circuit assemblies
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: > Printed circuit assemblies
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 8543.90.15.00
Flight Data Recorder Main Processing PCA
This printed circuit assembly serves as the core processing unit for flight data recorders, integrating microprocessors, memory chips, and signal conditioning circuits on a single board. It captures and processes critical flight parameters like altitude, speed, and attitude for black box systems. Classified under 8543.90.1500 as it is a multi-component PCA specifically assembled for flight data recorders.
Flight Data Recorder Sensor Interface PCA
A specialized printed circuit assembly that interfaces multiple aircraft sensors with the flight data recorder, featuring analog-to-digital converters and isolation circuits. It handles inputs from accelerometers, gyroscopes, and pressure sensors essential for crash survivable memory units. Meets 8543.90.1500 criteria as a joined subassembly for FDR systems.
FDR Data Storage Controller PCA
This PCA manages solid-state crash-survivable memory modules in flight data recorders, incorporating flash memory controllers and error correction circuitry. Designed for high-vibration, extreme-temperature environments per aviation standards. Specifically qualifies under HTS 8543.90.1500 for FDR subassemblies.
Flight Data Recorder Power Supply PCA
Printed circuit assembly providing regulated power distribution to FDR components, with redundant circuits and EMI filtering for aircraft 28VDC systems. Ensures continuous operation during flight emergencies. Classified as FDR subassembly under 8543.90.1500 due to multi-part construction for black box power management.
Flight Data Recorder Synchronization PCA
Printed circuit assembly providing precise time synchronization for FDR parameter recording, integrating GPS receivers and crystal oscillators. Ensures millisecond-accurate timestamps per crash investigation requirements. Qualifies under HTS 8543.90.1500 for FDR-specific subassemblies.
FDR Crash Survivability Interface PCA
This ruggedized PCA connects underwater locator beacons and crash-survivable memory units in flight data recorders, with shock-mounted components and sealing interfaces. Designed for 2000lb impact survival. HTS 8543.90.1500 classification for dedicated FDR subassemblies.
FDR Communications Interface PCA
This PCA enables ARINC 429 data bus communication between flight data recorder and aircraft avionics systems, featuring protocol transceivers and isolation transformers. Critical for real-time parameter acquisition. Falls under 8543.90.1500 as fastened multi-piece assembly for FDRs.