CSSI
CSSI is a Washington, DC-based aviation safety and transportation solutions firm that delivers Safety Management, software, systems engineering, modeling and simulation, and program management services primarily to the FAA, Department of Defense, and USDOT, and manufactures the E2GMU hardware used in the global RVSM aircraft monitoring program.
- Company typePrivate
- Founded1990
- HeadquartersWashington, United States
- Headcount251–500
- GTM typeB2B
- OfferingServices
What CSSI does
CSSI is a privately held aviation and aerospace engineering services firm headquartered in Washington, DC, founded in 1990 and operating as an LLC with 175+ employees across seven offices on the Eastern Seaboard and in Fort Worth and Seattle. The company delivers Safety Management, Software Development, Systems Engineering and Integration, Operational Research/Modeling and Simulation, and Acquisitions and Program Management services primarily to federal agencies — the Federal Aviation Administration, the Department of Defense, and the U.S. Department of Transportation — supporting National Airspace System (NAS) modernization and Air Traffic Management (ATM) systems. CSSI builds custom integrated software using Agile and DevSecOps methodologies, applies modeling and simulation for strategic decision-making, and uses advanced analytics and AI/ML tooling to provide data-driven insights for safety-critical programs.
CSSI also operates a niche commercial aviation business anchored by its proprietary Enhanced2 GPS Monitoring Unit (E2GMU) hardware, jointly designed with the FAA's NAARMO and manufactured under an exclusive FAA approval for commercial sale. The E2GMU — featuring tablet computing, open-source software, a JAVAD GPS receiver, an integrated Altitude Recording Device, and Wi-Fi/Bluetooth data transfer — supports the Reduced Vertical Separation Minimum (RVSM) monitoring program, in which aircraft operators must complete periodic monitoring flights to maintain RVSM approval. CSSI serves as an authorized RVSM monitoring contractor, is approved to calculate Altimetry System Error for the AFI Region and North America-registered aircraft, and works through a global network of approved RVSM monitoring partners to conduct monitoring flights. Across 25+ years of program participation, CSSI and its partners have supported more than 15,000 monitoring flights worldwide.
The company generates revenue from three streams: (1) federal government contracting services delivered through direct enterprise sales to FAA, DoD, and USDOT; (2) E2GMU hardware sales to commercial aviation operators; and (3) RVSM monitoring services delivered through approved partner operators. Pricing is not publicly disclosed; E2GMU sales are handled via direct sales contact. The company is independently owned (no evidence of PE or institutional backing) and underwent a CEO transition in February 2026, with Chris Hegedus (formerly SVP at Booz Allen Hamilton; prior roles at SAIC and GDIT) succeeding Kelly Caccetta after her 15-year tenure.
CSSI firmographics
Firmographics- Name
- CSSI
- Legal name
- CSSI, LLC
- Website
- https://cssiinc.com
- Company type
- Private
- Founded year
- 1990
- Operating status
- Operating
- Headcount range
- 251–500 employees
- Short description
- CSSI is a Washington, DC-based aviation safety and transportation solutions firm that delivers Safety Management, software, systems engineering, modeling and simulation, and program management services primarily to the FAA, Department of Defense, and USDOT, and manufactures the E2GMU hardware used in the global RVSM aircraft monitoring program.
- Ownership category
- akta.pro rank
CSSI industry classification
Industry- Product category
- Aviation Safety & Transportation Engineering Services
- NAICS
- Support Activities for Air Transportation (4881), Other Aircraft Parts and Auxiliary Equipment Manufacturing (336413), Other Support Activities for Air Transportation (488190)
- SIC
- Instruments For Meas & Testing Of Electricity & Elec Signals (3825), Aircraft Parts & Auxiliary Equipment, Nec (3728), Aircraft & Parts (3720)
- akta.pro primary industry
- NDT/Inspection & Testing Services (Aviation) (IMABALAJ)
- akta.pro secondary industry
- Military Aerospace Ground Support Equipment (GSE) & Test Systems (IMABAMAL)
Keywords
Where CSSI is headquartered
LocationHeadquarters
- HQ city
- Washington
- HQ country
- United States
- HQ region
- North America
Offices7 records
Markets served
CSSI business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Supply Chain
Revenue model
- Government Contracting Services: CSSI provides aviation safety and transportation solutions to government clients including the FAA and Department of Defense. Services include Safety Management, Software Development, Systems Engineering and Integration, Operational Research, Modeling and Simulation, and Acquisitions and Program Management support for federal aviation programs.
- E2GMU Hardware Sales: CSSI manufactures and sells the Enhanced2 GPS Monitoring Unit (E2GMU) for commercial sale. The FAA granted CSSI exclusive approval to produce the E2GMU for continued support of the RVSM monitoring program.
- RVSM Monitoring Services: CSSI provides RVSM monitoring services through approved monitoring partners, supporting aircraft operators in meeting the requirement to complete monitoring flights every two years or 1,000 flight hours to maintain RVSM approval status.
Go-to-market motion1 record
Distribution channels3 records
Marketing channels3 records
CSSI product offering
Product offeringCore offering
CSSI provides aviation safety and transportation solutions to U.S. federal agencies (FAA, DoD, DOT) and commercial aviation operators. Its core capabilities span Safety Management, custom Software Development, Systems Engineering and Integration, Operational Research/Modeling and Simulation, and Acquisitions & Program Management. The company also conducts RVSM monitoring services and manufactures the proprietary E2GMU hardware under exclusive FAA approval.
Product overview
CSSI provides an integrated portfolio of aviation safety and transportation solutions for government and commercial clients. The company's core capabilities include Safety Management Services, Software Development, System Engineering and Integration, Operational Research/Modeling and Simulation, and Acquisitions & Program Management. CSSI also offers specialized Business Aviation Solutions including Reduced Vertical Separation Minimum (RVSM) monitoring services and the Enhanced Generation 2 GPS Monitoring Unit (E2GMU) product. The E2GMU is manufactured by CSSI under exclusive FAA approval for commercial sale. CSSI serves customers across the U.S. Department of Transportation, Department of Defense, FAA, and commercial aviation clients, with over 175 employees stationed along the Eastern Seaboard.
Differentiator
Problem solved
Functional benefit
Products and services
- Safety Management Services
Quantifiable outcome
- 15,000+ monitoring flights supported worldwide
- +1 more outcomes
Companies that use CSSI
Customer profileNamed customers4 records
Segments3 records
Ideal customer profiles2 records
CSSI technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability3 records
Feature3 records
CSSI partnerships and signals
Strategic signalPartnerships
Four partnerships are on record, tiered core.
- FAA NAARMO (North American Approvals Registry and Monitoring Organization)coreCSSI jointly designed and developed the E2GMU with the FAA's North American Approvals Registry and Monitoring Organization. The FAA granted CSSI exclusive approval to produce the E2GMU for commercial sale for continued support of the RVSM monitoring program.
- JAVAD, Inc.coreThe E2GMU uses an onboard GPS Receiver manufactured by JAVAD, Inc. The GPS receiver is manufactured by JAVAD and receives GPS radio signals via two GPS antennas.
- ICAO Regional Monitoring Agency (RMA)coreCSSI is authorized to calculate Altimetry System Error (ASE) and submits those results to the respective ICAO Regional Monitoring Agency (RMA) for final RVSM approval for aircraft.
- Approved RVSM Monitoring PartnerscoreCSSI's approved RVSM monitoring partners conduct the RVSM monitoring flight required for aircraft to maintain RVSM approval status. CSSI has served the RVSM monitoring program for over 25 years alongside these partners.
Scale indicators3 records
Recent moves6 records
Expansion highlights4 records
CSSI competitors and assessment
Company assessmentBroad incumbents
- GDIT (General Dynamics Information Technology): Federal IT services arm of General Dynamics with substantial FAA, DoD, and aviation systems engineering work. Comparable to CSSI on systems integration and mission-critical aviation software delivery; the new CSSI CEO also held prior roles at GDIT.
- CACI International: Federal services and IT company providing engineering, systems integration, and aviation-domain support to DoD and civilian agencies. Comparable to CSSI on systems engineering and integration work for federal aviation customers, but at a substantially larger scale.
- SAIC: Major federal IT and engineering services prime that delivers systems engineering and integration work to FAA, DoD, and DOT. Highly comparable to CSSI on aviation safety, ATM, and federal contracting capabilities, with the new CSSI CEO's prior background at SAIC underscoring the direct overlap.
- Peraton: Federal services company with significant FAA, DoD, and aviation safety mission support work. Comparable to CSSI on systems engineering and integration for air traffic management and aviation safety programs at a larger scale.
- Booz Allen Hamilton: Premier federal consulting and engineering firm with deep FAA, DoD, and DOT aviation practices. Directly comparable as a CSSI peer on systems engineering, safety management, and AI/ML-enabled mission analytics; the incoming CSSI CEO most recently served as Senior Vice President at Booz Allen.
- Leidos: Large federal science and technology integrator with a significant FAA and DoD Air Traffic Management practice. Directly comparable to CSSI on FAA systems engineering, ATM modernization, and aviation safety services, though operating at much greater scale with a broader portfolio.
Direct peers
- ICF International: Advisory and digital services firm with a sizable FAA and aviation safety practice. Closely comparable to CSSI on federal aviation consulting, modeling and simulation, and safety management work, with similar mission-critical federal customer orientation.
- Mosaic ATM: Aviation research and ATM consulting firm delivering modeling, simulation, and airspace analysis for FAA and DoD. Closely comparable to CSSI on Operational Research and M&S capabilities supporting NAS modernization.
- Metron Aviation: Specialized Air Traffic Management and airspace consulting firm providing modeling, simulation, and operational analysis to FAA, DoD, and international aviation agencies. A direct comparable to CSSI on ATM systems engineering and M&S work, at a similar mid-market scale.
Emerging players
- Aviation Safety & Certification (ASaC) Group (a Nodehi company): Niche aviation safety and certification services provider offering FAA regulatory, SMS, and operational safety support. Closely comparable to CSSI's Safety Management Services line, serving similar federal and commercial aviation customers from a smaller base.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat5 records
Key risks5 records
Key highlights6 records
Customer concentration
CSSI social profiles
Digital presenceCSSI financial estimates
Financial estimateRevenue estimate
Valuation estimate
CSSI leadership team
Management profileNumber of profiles
Profiles2 records
CSSI funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
CSSI M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about CSSI
What does CSSI do?
CSSI provides aviation safety and transportation solutions to U.S. federal agencies (FAA, DoD, DOT) and commercial aviation operators. Its core capabilities span Safety Management, custom Software Development, Systems Engineering and Integration, Operational Research/Modeling and Simulation, and Acquisitions & Program Management. The company also conducts RVSM monitoring services and manufactures the proprietary E2GMU hardware under exclusive FAA approval.
Is CSSI a public or private company?
CSSI is a private company. It is classified as unknown and is currently operating.
When was CSSI founded?
CSSI was founded in 1990. It employs 251 to 500 people.
Where is CSSI based?
CSSI is headquartered in Washington, United States, in the North America region.
How does CSSI make money?
Three revenue lines are on record. Government Contracting Services are the primary driver. The others are E2GMU Hardware Sales and RVSM Monitoring Services.
Who are CSSI's main competitors?
Broad incumbents on record are GDIT (General Dynamics Information Technology), CACI International, SAIC, Peraton, Booz Allen Hamilton and Leidos. Direct peers are ICF International, Mosaic ATM and Metron Aviation. Aviation Safety & Certification (ASaC) Group (a Nodehi company) is listed as an emerging player.
Does CSSI have an API?
No public API is recorded for CSSI.
What industry is CSSI in?
CSSI's product category is Aviation Safety & Transportation Engineering Services. Its primary akta.pro industry code is IMABALAJ, NDT/Inspection & Testing Services (Aviation), with a secondary code of IMABAMAL, Military Aerospace Ground Support Equipment (GSE) & Test Systems. Its NAICS code is 4881 and its SIC code is 3825.