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.
Other Quality Control, Testing and Inspection Services: Aircraft and Airframe Structural Components
Possible NAICS Codes
488190 – Other Support Activities for Air Transportation
926150 – Regulation, Licensing, and Inspection of Miscellaneous Commercial Sectors
541715 – Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
335312 – Motor and Generator Manufacturing