Diagnostic Solutions International LLC

Diagnostic Solutions International LLC, operating as Diagnostic Solutions, is a veteran-owned manufacturer of specialized aerospace and aviation equipment that sells to the federal government overwhelmingly as a prime contractor (97% of awards) competing in full-and-open procurements without set-aside protections. The company is a limited liability company based in Ontario, California, and manufactures aircraft components, testing devices, and diagnostic systems for military platforms including the C-130 Hercules, AH-64 Apache, and MH-60T helicopters.

Diagnostic Solutions' customer base concentrates heavily on defense logistics and naval aviation. The Defense Logistics Agency Aviation dominates by volume (110 awards) and dollars ($21.3 million combined potential value across 72% of awards tracked), with the Department of the Navy Naval Supply Systems Command second (53 awards, $3.4 million), followed by the Department of the Air Force, Naval Air Warfare Center, and the U.S. Coast Guard in smaller volume. Across the top five customer agencies, potential value splits between DLA Aviation's supply-chain leadership ($21.3 million) and Air Force and Navy technical services ($3.4 to $4.6 million each), indicating Diagnostic Solutions serves both parts procurement and condition-monitoring roles.

The vendor holds two significant federal contract vehicles: a single-award Basic Ordering Agreement with Naval Supply Systems Command (February 2024 through February 2029) for navy repairs and spares with undefined ceiling, and a single-award Indefinite Delivery Contract with the Air Force Life Cycle Management Center at Robins Air Force Base valued at $2.185 million through May 2028 for C-130 Vibration Expert System services. Task orders under the Air Force IDC provide vibration analysis and condition monitoring capabilities supporting C-130 fleet maintenance. Diagnostic Solutions also operates under several DLA Aviation IDCs—SPE4A520D0004, D0020, and D0030 collectively accounting for 51 task orders and approximately $5.3 million in combined value—supplying infrared trackers, probe lights, air velocity meters, optical readers, and adapter sets.

Work covers five primary NAICS categories: Other Aircraft Parts and Auxiliary Equipment Manufacturing (87 awards), Other Measuring and Controlling Device Manufacturing (60 awards), Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing (12 awards), Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (11 awards), and Other Electronic Component Manufacturing (10 awards). Representative prime contracts include a $1.796 million DLA Aviation purchase order for 33 adapter sets (July 2025), a $564 thousand Air Force delivery order for C-130 vibration expert system support (December 2025), a $326 thousand DLA Aviation purchase order for ground adapter sets under a total small business set-aside (December 2025), and a $109 thousand DLA Aviation small-business-set-aside purchase order for 15 infrared tracker units (December 2025). A $30 thousand Coast Guard sole-source purchase order for VXP printer accessories supporting HC-27J aircraft and a $66 thousand Coast Guard sole-source balancing kit procurement for C27J aircraft both leverage Diagnostic Solutions' proprietary technical data on specialized Honeywell Health and Usage Monitoring System products.

Activity has remained relatively stable (9 awards in 2022 to 18 in both 2023 and 2024, declining to 14 in 2025 and 4 in the partial 2026 calendar). Only five awards face ultimate completion in the next twenty-four months (combined potential value $828 thousand), indicating limited recompete exposure in the near term. As a subcontractor, Diagnostic Solutions supplies aircraft maintenance kits, VXP balancer equipment, and optical tracker test sets to Amentum Services, Simmonds Precision Products, and Defense Systems and Solutions on programs including international Apache provisioning and H-60M initial fielding. The company competes in the non-set-aside federal marketplace, with no 8(a), HUBZone, SDVOSB, or WOSB designations, positioning it as a full-and-open competitor relying on established relationships with DLA Aviation's supply chain and technical expertise in vibration diagnostics and aircraft component manufacturing.

Distribution and sale of HUMS system products for Helicopters and prop aircraft