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.
Maintenance, Repair and Rebuilding of Equipment: Aircraft and Airframe Structural Components
Possible NAICS Codes
488190 – Other Support Activities for Air Transportation
336411 – Aircraft Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
541330 – Engineering Services
336412 – Aircraft Engine and Engine Parts Manufacturing