PSC 1620

Overview

The Product Service Code (PSC) is a uniform taxonomy the U.S. government uses to classify supplies, services, and research and development in procurement. PSCs support consistent reporting and analysis of what agencies buy, including in FPDS and other procurement systems, and are maintained through the PSC Manual published on Acquisition.gov. ¹

PSC 1620 is the product code for Aircraft Landing Gear Components within Federal Supply Group 16 (Aerospace Craft Components and Accessories). The official scope includes shock struts and components; installation elements such as torsion bars, vibration links, and drag struts; landing gear trunnions, axles, and shimmy dampers; and aircraft‑specific hydraulic power steering system components. Exclusions include mounting braces/plates permanently installed on aircraft (use 1680) and landing wheels, skis, floats, and wheel brakes and wheel‑brake cylinders (use 1630). ¹

• See also on G2X:
  • G2X — PSC 1620 overview
  • G2X — PSC 1630 Aircraft Wheel and Brake Systems
  • G2X — PSC 1710 Aircraft Landing Equipment

What this PSC covers

• Shock struts and shock‑strut components for aircraft landing gear. ¹
• Installation elements integral to landing gear assemblies, including torsion bars, vibration links, and drag struts. ¹
• Landing gear trunnions and related structural components. ¹
• Axles designed for aircraft landing gear. ¹
• Shimmy dampers for landing gear assemblies. ¹
• Aircraft‑specific hydraulic power steering system components associated with landing gear. ¹

Related NAICS and PSC codes

Type	Code	Descriptor
PSC	1630	Aircraft Wheel and Brake Systems
PSC	1650	Aircraft Hydraulic, Vacuum, and De‑icing System Components
PSC	1680	Miscellaneous Aircraft Accessories and Components
PSC	1710	Aircraft Landing Equipment

Descriptions per PSC Manual. ¹

Boundary notes (includes vs. excludes)

• Includes: Shock struts and components; torsion bars; vibration links; drag struts; landing gear trunnions; axles; shimmy dampers; specially designed hydraulic power steering components. ¹
• Excludes: Mounting braces and plates permanently installed on aircraft (use 1680). ¹
• Excludes: Landing wheels, skis, and floats, and wheel brakes and wheel‑brake cylinders (use 1630). ¹
• Cross‑references: Hydraulic components not specifically for landing gear are generally classified under 1650. ¹

Reporting and FPDS usage notes

• The PSC code is recorded in FPDS as data element 8A “Product or Service Code.” Select the code that reflects the predominant product purchased when a contract includes multiple items. ¹
• PSC is also a selectable filter within SAM.gov’s Contract Awards domain for search and reporting. ³

Frequently asked questions

• What items are explicitly included in PSC 1620?

  • The PSC Manual lists shock struts and components; installation elements such as torsion bars, vibration links, and drag struts; landing gear trunnions; axles; shimmy dampers; and aircraft‑specific hydraulic power steering components designed for landing gear assemblies. ¹

• Are wheels, brakes, skis, or floats part of PSC 1620?

  • No. Landing wheels, wheel brakes and associated cylinders, skis, and floats are coded under PSC 1630, not PSC 1620. Mounting braces or plates permanently installed on aircraft are excluded and coded under PSC 1680. ¹

• How is PSC 1620 different from PSC 1710?

  • PSC 1620 covers aircraft‑installed landing gear components. PSC 1710 covers landing equipment used in landing operations (e.g., arresting barriers), not aircraft‑installed gear components. The two codes address distinct scopes of supply. ¹

• Does PSC 1620 determine set‑aside eligibility or Buy American/Trade Agreements applicability?

  • The PSC Manual defines product scope and classification. It does not establish socio‑economic set‑aside rules or domestic preference applicability, which are determined by separate statutes and regulations. Not specified by official sources. ²

• Where are PSC codes used in federal reporting and searches?

  • PSC appears as a filter in SAM.gov’s Contract Awards search and reporting interfaces, allowing users to refine results by product/service categories. This helps analysts and vendors identify awards and opportunities aligned to specific PSCs. ³

Useful resources

• Product and Service Codes (PSC) Manual — April 2025 (PDF). ¹
• Product and Service Code Manual landing page (current and archives). ²
• SAM.gov Contract Data: filter by NAICS and PSC in Contract Awards. ³

References

1. Acquisition.gov — PSC Manual April 2025 (PDF): https://www.acquisition.gov/sites/default/files/manual/PSC%20Manual%20April%202025.pdf
2. Acquisition.gov — Product and Service Code Manual page: https://www.acquisition.gov/psc-manual
3. SAM.gov — Contract Data (Contract Awards domain uses NAICS and PSC filters): https://sam.gov/content/contract-data