As platforms age, OEM support for sustainment diminishes and end-users tasked with maintaining operational readiness are faced with critical supply chain deficits. 55 Group offers its military and commercial customer base legacy parts and MRO solutions that address these shortfalls. We are a global provider of comprehensive support for U.S. manufactured legacy defense platforms.


AS-565, Bell 206, Bell 212, Bell 412, Bell AH1 Cobra, Bell OH-58D, Boeing AH64 Apache,
Boeing CH47, Sikorsky CH-53, Sikorsky Black Hawk Variants, Sikorsky S-70, MD500

NAICS Codes:

  • 237210 (Land Subdivision)
  • 332722 (Bolt, Nut, Screw, Rivet, and Washer Manufacturing)
  • 332999 (All Other Miscellaneous Fabricated Metal Product Manufacturing)
  • 334412 (Bare Printed Circuit Board Manufacturing)
  • 334413 (Semiconductor and Related Device Manufacturing)
  • 334416 (Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing)
  • 334417 (Electronic Connector Manufacturing)
  • 334418 (Printed Circuit Assembly (Electronic Assembly) Manufacturing)
  • 334419 (Other Electronic Component Manufacturing)
  • 336411 (Aircraft Manufacturing)
  • 336412 (Aircraft Engine and Engine Parts Manufacturing)
  • 336413 (Other Aircraft Parts and Auxiliary Equipment Manufacturing)
  • 336414 (Guided Missile and Space Vehicle Manufacturing)
  • 336415 (Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing)
  • 336419 (Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing)
  • 336992 (Military Armored Vehicle, Tank, and Tank Component Manufacturing)
  • 336999 (All Other Transportation Equipment Manufacturing
  • 423450 (Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers)
  • 423710 (Hardware Merchant Wholesalers)
  • 425120 (Wholesale Trade Agents and Brokers)
  • 561621 (Security Systems Services (except Locksmiths))



55 Group and its member companies serve as the strategic connection between manufacturers and both defense and commercial customers on a large variety of platforms, systems and programs. We coordinate, source and supply materials and repair services for these markets while specializing in aging and legacy platforms.