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D-ATC indicator used on the E233 series trains. The digital ATC system uses the track circuits to detect the presence of a train in the section and then transmits digital data from wayside equipment to the train on the track circuit numbers, the number of clear sections (track circuits) to the next train ahead, and the platform that the train will arrive at.
Entry into an occupied block is prevented by an automatic train protection system (ATP), which supervises both manual and ATC operation and stops the train well before it would enter an occupied block. At switches entering into pocket tracks in a direction reverse to the normal operating direction, there is a "P Signal". The P Signal is a ...
A flight deck manual, usually part of a Quick Reference Handbook: CLR Clear Seen on GFA and is used for sky coverage CMC central maintenance computer CMM component maintenance manual CMO Certificate Management Office: FAA CMV converted meteorological visibility: CMPA complex motor-powered aircraft CMU Communications Management Unit CNS
International Civil Aviation Organization Doc 4444 requires that radar systems should provide for the display of safety-related alerts including the presentation of minimum safe altitude warning. [2] The radar equipment predicts an aircraft’s position in 2 minutes based on present path of flight, and the controller issues a safety alert if ...
Automatic test equipment diagnostics is the part of an ATE test that determines the faulty components. ATE tests perform two basic functions. The first is to test whether or not the Device Under Test is working correctly. The second is when the DUT is not working correctly, to diagnose the reason.
The U.S. Army Test and Evaluation Command, or ATEC, is a direct reporting unit of the United States Army responsible for developmental testing, independent operational testing, independent evaluations, assessments, and experiments of Army equipment.
The standard environmental test conditions and test procedures contained within the standard, may be used in conjunction with applicable equipment performance standards, as a minimum specification under environmental conditions, which can ensure an adequate degree of confidence in performance during use aboard an air vehicle.
The Aeronautical Fixed Telecommunications Network (AFTN) is a worldwide system of aeronautical fixed circuits provided, as part of the Aeronautical Fixed Service, for the exchange of messages and/or digital data between aeronautical fixed stations having the same or compatible communications characteristics.