Thales UK signed a contract to supply and install a Cat III 420 Instrument Landing System (ILS) and 415 Distance Measuring Equipment (DME) to Liverpool John Lennon Airport. Financial terms of the deal were not disclosed. Thales said the airport is replacing its existing ILS/DME installation, enabling them to provide a CATIII landing capability. The ILS system provides pilots with information to enable guidance during descent and with deviation information from a defined approach path down to and along the runway surface. DME systems provide the pilot with distance information between the aircraft and the location of the DME ground equipment. Thales UK said it has orders for more than 25 420 ILS systems to be supplied to the Ministry of Defence and Regional Airports in the U.K. For related news