This means that you'll be able to search for NAICS codes directly (if that's your jam). We'll do the math; let's make better data on public procurement together.
Quality Control Services: Aircraft and Airframe Structural Components
Possible NAICS Codes
488190 – Other Support Activities for Air Transportation
336411 – Aircraft Manufacturing
541380 – Testing Laboratories and Services
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
334519 – Other Measuring and Controlling Device Manufacturing