Flight Calibration Services Limited
FCSL has a mission to provide a quality professional service to United Kingdom Regional and International Airports.
31 employees · est. 2005 · United Kingdom
Vigilant Aerospace Systems, Inc.
Vigilant Aerospace Systems provides airspace management and flight safety systems for both manned & unmanned aircraft
5 employees · est. 2015 · Oklahoma City, United States
Flight Calibration Services Limited is the older company (2005 vs 2015); Flight Calibration Services Limited is the larger of the two.
Side-by-Side Comparison
| Metric | Flight Calibration Services Limited | Vigilant Aerospace Systems, Inc. |
|---|---|---|
| Founded | ||
| Founded | 2005 older | 2015 |
| Headquarters | ||
| Headquarters | United Kingdom | Oklahoma City, United States |
| Employees | ||
| Employees | 31 larger | 5 |
| Industry | ||
| Industry | Transportation | Space, Transportation |
| Funding Stage | ||
| Funding Stage | Private Equity | Grant |
| Total Funding | ||
| Total Funding | Not tracked yet | $2.14M |
| Funding Rounds | ||
| Funding Rounds | 1 | 4 |
| Services | ||
| Services | Flight Inspection & Validation, Aerial Survey, Special Mission Solutions, Aircraft Maintenance Services, Technical Support & Advice, Training | Not tracked yet |
| Target Customers | ||
| Target Customers | Civil Airports, Military Airports, Aerospace Professionals, Regulators, Air Traffic Management Units | Not tracked yet |
| Taxonomy | ||
| Taxonomy | Flight Calibration, Flight Inspection, Instrumentation Validation, Navigation Aids, Instrument Landing Systems (ILS), Cat III ILS, Radar Systems, Flight Inspection System Manufacturer, Airborne Equipment, Automation In Flight Inspection, Cost-effective Solutions, Aviation Technology, Aircraft Operations, Airfield Disruption Minimization | Aerospace Software, Unmanned Aerial Systems, Aviation Safety, Flight Information Systems, Flight Management Systems, ADS-B Systems, Collision Avoidance, Aircraft Fleet Management |
| Website | ||
| Website | flight-cal.com | VigilantAerospace.com |
About Flight Calibration Services Limited
Flight Calibration Services Limited (FCSL) is a United Kingdom-based company specializing in flight calibration services, which includes inspection, validation, and checking of aircraft radio navigation aids. Founded in 2005, the company leverages its dual role as both a Flight Inspection Service pr...
About Vigilant Aerospace Systems, Inc.
Vigilant Aerospace Systems, Inc. is a pioneering force in the development of detect-and-avoid and airspace management software for uncrewed aircraft systems (UAS or drones). The company’s flagship product, FlightHorizon, has garnered acclaim in the industry and is based on two exclusive NASA patents...
We will tell you when either one moves
BounceWatch watches Flight Calibration Services Limited and Vigilant Aerospace Systems, Inc. for new funding, fast hiring, new executives and a change of software vendor. When one happens, we email you the same day.
Funding, hiring, leadership and stack changes at Flight Calibration Ser... and Vigilant Aerospace Sys... — by email.
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Compiled from the BounceWatch company index. We last looked at Flight Calibration Services Limited on 16 Mar 2026, and Vigilant Aerospace Systems, Inc. on 25 Jul 2024. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.
