David Richard Barlett

Avionic Services International Ltd. provides air traffic control and engineering services. Its products include CCR, VCCS, AGL, CTLI and consoles systems. The company is headquartered in Chessington, the United Kingndom.

Flight Calibration Services Ltd. engages in the manufacture of flight inspection system and provision of flight inspection services. It offers flight calibration, inspection, validation and checking for the full range of aircraft radio navigation aids, including Instrument Landing Systems (ILS) to Cat III and primary and secondary radar systems with minimum disruptions to airfield and aircraft operations. The company was founded on August 1, 2005 and is headquartered in Shoreham, the United Kingdom.