Information AboutCivil Aviation |
| CATEGORIES ABOUT CIVIL AVIATION | |
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Civil aviation is one of two major categories of flying, representing all non- Military Aviation , both private and commercial. Most of the countries in the world are members of the International Civil Aviation Organization (ICAO) and work together to establish common standards and rules for civil aviation through that agency. Because civil aviation and military aviation operate under different rules around the world, there are sometimes difficulties when the two share the same airspace, occasionally with fatal results. Civil aviation includes two major categories:
For the public, the most visible part of civil aviation is scheduled air transport, but in fact, the vast majority of flights operate under general aviation. THE TERM 'LICENCE PLATE' IN COMMERCIAL AVIATION The term 'licence plate' (using UK spelling) is also used as an official term by commercial airlines (a.k.a. carriers) and airports for the 10-digit numeric code on a bag tag issued by a carrier or handling agent at check-in. The licence plate is normally printed on the carrier tag in bar-code form and in human-readable form, as defined in IATA Resolution 740. Each digit in a licence plate has a specific meaning. Contrary to popular belief, the flight number is not encoded in the licence plate on the carrier tag: the licence plate is an index number linking a bag to an associated message sent by a carrier's Departure Control System to an airport's Baggage Handling System. It is the message that contains the flight details, thus enabling an automated Baggage Handling System to sort a bag automatically once it has scanned the bar-code on the carrier tag. Thus two things are essential for automated sorting of baggage: a carrier tag with a bar-coded licence plate, plus a corresponding message ('Baggage Source Message', or BSM for short) from a carrier's Departure Control System. Note that the human-readable licence plate may contain a 2-character IATA carrier code instead of an IATA 3-digit carrier code, e.g. SQ728359 instead of 0618728359, but the bar-code will always be for the full 10 digits (0618728359 in the example - 618 and SQ being, respectively, the IATA 3-digit code and IATA 2-character code for Singapore Airlines). The first digit of a 10-digit licence plate is not part of the carrier code; it can be in the range '0' to '9', each value having a specific meaning in the industry. |
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