Aircraft landing gear is a critical system that supports an aircraft during takeoff, landing, taxiing, and ground operations. Because landing gear assemblies contain numerous specialized components, accurate classification is essential for identifying, sourcing, and managing these parts. FSC 1620 Aircraft Landing Gear Components provides a standardized classification for many of these components within Federal Supply Group (FSG) 16 – Aerospace Craft Components and Accessories.
What Is FSC 1620?
FSC 1620, or Federal Supply Class 1620, is designated for Aircraft Landing Gear Components. It falls under FSG 16, which covers aerospace craft components and accessories. The classification helps organizations organize aircraft parts according to their intended function and application.
According to the applicable supply classification, FSC 1620 includes shock struts and related components, torsion bars, vibration links, drag struts, landing gear trunnions, axles, shimmy dampeners, and specially designed hydraulic power steering system components.
This classification is particularly useful for procurement teams, aviation maintenance organizations, distributors, and government agencies searching for parts by standardized supply codes.
Components Covered Under FSC 1620
Aircraft landing gear systems rely on many mechanical and hydraulic components. Some common examples found within FSC 1620 include:
- Landing gear axles and trunnion assemblies
- Shock struts and piston assemblies
- Torsion bars and torque-related components
- Drag struts and connecting links
- Shimmy dampeners
- Landing gear actuating components
- Hydraulic steering system components
- Retractable landing gear assemblies
- Various brackets, pins, collars, fittings, and structural components
A parts catalog for FSC 1620 can contain hundreds of NSN-listed items, including landing gear springs, support assemblies, retractable landing gear, piston components, and other specialized parts.
Understanding FSG, FSC, and NSN Codes
Knowing how supply classification codes work can make aircraft parts procurement more efficient.
FSG – Federal Supply Group: The first two digits identify the broad supply group. FSC 1620 belongs to FSG 16, Aerospace Craft Components and Accessories.
FSC – Federal Supply Class: The four-digit code identifies a more specific category. In this case, 1620 represents Aircraft Landing Gear Components.
NSN – National Stock Number: An NSN provides a standardized identification number for an individual supply item. An NSN generally contains the four-digit FSC followed by a nine-digit NIIN structure. For example, an item may be identified by an NSN beginning with 1620, indicating its FSC classification.
Using these codes together allows buyers and maintenance professionals to narrow searches and distinguish similar aircraft components.
FSC 1620 vs. Related Classes
Correct classification is important because neighboring FSCs can cover different aircraft components. FSC 1620 specifically covers landing gear components, while FSC 1630 covers aircraft wheel and brake systems. Landing wheels, skis, and floats are also excluded from FSC 1620 and classified under FSC 1630. Permanently installed mounting braces and mounting plates are excluded and fall under FSC 1680.
Understanding these distinctions helps procurement professionals avoid searching the wrong category when looking for a replacement part.
Finding FSC 1620 Aircraft Landing Gear Components
Searching by FSC can be an efficient starting point when sourcing replacement aircraft components. The NSN Target FSC catalog provides a dedicated listing for FSC 1620 Aircraft Landing Gear Components, with part numbers, NSNs, item names, manufacturers, and availability information.
The catalog can help users identify potential part matches and review relevant NSN information before submitting a request for quotation.
For a broader classification overview, explore the FSG and FSC catalog, or browse the dedicated FSC 1620 Aircraft Landing Gear Components catalog.
Conclusion
FSC 1620 Aircraft Landing Gear Components is an important classification for organizing and sourcing specialized aircraft landing gear parts. From shock struts and axles to trunnions, drag struts, dampeners, and hydraulic steering components, the classification covers a wide range of essential aircraft hardware.
By understanding the relationship between FSG 16, FSC 1620, and individual NSNs, aviation procurement and maintenance teams can improve parts identification, streamline sourcing, and reduce the risk of selecting an incorrectly classified component.
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