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The following list shows specific aeronautical transponder codes, and ranges of codes, that have been used for specific purposes in various countries.Traditionally, each country has allocated transponder codes by their own scheme with little commonality across borders.
Used in all levels of the European E-carrier system, the high density bipolar of order 3 (HDB3) code replaces any instance of 4 consecutive 0 bits with one of the patterns "000V" or "B00V". The choice is made to ensure that consecutive violations are of differing polarity; i.e., separated by an odd number of normal + or − marks.
Signals can be in the form of blasts on alarm bells, sounds on the ship's whistle or code names paged over the PA system. Alpha, alpha, alpha is the code for a medical emergency aboard Royal Caribbean and Norwegian ships. [1] Alpha Team, Alpha Team, Alpha Team is the code for a fire emergency aboard Carnival Cruise Line ships.
The first aircraft carrier commissioned into the U.S. Navy was USS Langley (CV-1) on 20 March 1922. The Langley was a converted Proteus-class collier, originally commissioned as USS Jupiter (AC-3). [1]
The Standard Carrier Alpha Code (SCAC) is a privately controlled US code used to identify vessel operating common carriers (VOCC). It is typically two to four letters long. The National Motor Freight Traffic Association developed the SCAC code in the 1960s to help road transport companies computerize data and records. [1]
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The "C" code issued to this NAS was a controlled duplicate of the same code letter given to Carrier Air Group 5. Code changed to "7C" in 1956. CVG-6, Carrier Air Group 6Carrier Air Group 6: 1952 Tail code changed to "AF" in November 1956. TW-3, Training Air Wing 3 Disestablished in August 1992.
In the 1990s, Carrier stopped using the "Day & Night" brand (which was the "D" in the BDP division, or Bryant-Day & Night-Payne) but it was revived in 2006 by ICP. In 2001, Carrier was the "world's largest manufacturer of air-conditioning, heating, and refrigerator equipment" with a "total employment of 42,600" and a revenue of $8.9 billion.