Flight Calibration Services Ltd (FCSL) provides cost effective flight calibration / inspection / validation / checking for the full range of aircraft radio navigation aids, including Instrument Landing Systems (ILS) to Cat III and primary / secondary radar systems with minimum disruptions to airfield and aircraft operations. The company's remarkable growth has been underpinned by continued and substantial investment in aircraft, flight inspection equipment and personnel, which allows it to continually improve customer services. FCSL is both a Flight Inspection Service provider and a Flight Inspection System (FIS) manufacturer. By taking full advantage of this combination of capabilities and the efficiencies available through its use of the latest technology, significant cost savings have been made. The main cost saving has been achieved by using small lightweight airborne equipment with a high level automation, which reduces manpower and enables the use of smaller aircraft with lower operating and modification costs.