FDR Synchronization and Timing Module Subassembly from Japan
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.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include atomic clock equivalence certifications if applicable; check for EAR99 classification; provide assembly diagrams for customs review