FDR Synchronization and Timing Module Subassembly from Mexico
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 — Mexico → United States
10%
Rate breakdown
9903.03.0110%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
Import Tips
• Include atomic clock equivalence certifications if applicable; check for EAR99 classification; provide assembly diagrams for customs review