NAICS 541990 and PSC 1620 contractors in Illinois

All Other Professional, Scientific, and Technical Services. AIRCRAFT LANDING GEAR COMPONENTS. Use this deeper state cross-code page to see which visible contractors sit in the overlap between these two lanes inside Illinois.

Illinois · NAICS 541990 · PSC 1620

Last updated: April 3, 2026

Visible recipients

Mapped obligations

$372,853,005

Buyer overlap

Top recipients

Visible recipients in the Illinois overlap of NAICS 541990 and PSC 1620

Aar Government Services, Inc.

Wood Dale, IL

Aar Government Services, Inc. is a federal category business profile based in Wood Dale, IL. The current public data layer shows $254,953,145 in visible federal obligations across 429 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 488190 (Other Support Activities for Air Transportation). The profile also shows meaningful product and service activity in PSC J015.

$372,853,005