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|established_date1 = 14 June 1956
|established_date1 = 14 June 1956
|established_event2 = Convention on Safe International Flight
|established_event2 = Convention on Safe International Flight
|established_date2 =  12 February 1957
|established_date2 =  12 February 1957 - 18 March 1957
|official_website = atro.int
|official_website = atro.int
|FR_total_population_estimate =  
|FR_total_population_estimate =  
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ATRO is uniquely distinct from other international air transport organizations in its international authority among signatory states.
ATRO is uniquely distinct from other international air transport organizations in its international authority among signatory states.
==History==
The boom in air travel after the [[Second Great War]] led to international and even intercontinental air travel becoming more widespread than before the war. The use of surplus airframes led to a boom in international air travel, and the years between 1943 and 1957 saw a rapid decrease increase in accidents and incidents. Confusion arose when pilots had to adhere to different policies and standards for every country they flew into, and soon multiple regional and international organizations popped up trying to standardize air travel between various creations.
The [[League of Nations]], created in 1955, recognized the issue created in the years since the war during its first year of existence, and a early 1956 resolution allowed for the creation of the '''Air Traffic Regulatory Organization''' as the LoN's main body for standardizing air travel across the globe in an effort to increase safety. The new organization hosted the Convention on Safe International Flight in early 1957, which lasted over a month and led to most member states signing the Convention on Safe International Flight Charter, a document that laid the groundwork for ATRO's authority and planned for standardization by 1962.
ATRO's first years were spent researching and implementing measures that standardized aerial navigation and international border crossing across the globe, before helping member states implement these measures. Once the basics were in place, ATRO's focus shifted to creating the ATRO Standards for Aeronautical Accident Investigation in 1967, which allowed the transport safety authorities of various countries to investigate accidents and incidents in a way that could be understood across the globe.
==Statute==
The current 7th edition of the Convention on Safe International Flight Charter includes modifications from 1957 to 2017. The convention has 21 Annexes. 7 provisional addendums have been issued since 2017, which are to be ratified at the next Convention planned for 2037.
==Membership==
As of September 2033, all League of Nations member states are a member of ATRO. Various non-LoN member states follow or used to follow ATRO's standards and regulations prior to ATRO and LoN membership, to be more appealing to foreign air travel.
== Council ==
[[File:ICAO Council Chamber 2013.jpg|thumb|The ACRO's council chamber in 2027.]]
ATRO's Council is elected every six years and consists of 20 member states. The present council was elected in June 2030.
Currently, the Council is as follows.
* {{Flag|Urcea}}
* {{Flag|Kiravia}}
* {{Flag|Caphiria}}
* {{Flag|Burgundie}}
* {{Flag|Cartadania}}
* {{Flag|Daxia}}
* {{Flag|Faneria}}
* {{Flag|Alstin}}
* {{Flag|Stenza}}
* {{Flag|Arcerion}}
* {{Flag|Fiannria}}
* {{Flag|The Cape}}
* {{Flag|Tierrador}}
* {{Flag|Pelaxia}}
* {{Flag|Fiannria}}
* {{Flag|Paulastra}}
== Navigation Development Commission ==
The Navigation Development Commission is the ATRO Council technical executive body in charge of 18 of the 21 Annexes to the Convention on Safe International Flight Charter. NDC oversees the development and implementation of standards and recommended practices for member states related to those annexes. The Commission meets twice a year, every spring and fall, with the time in between spent by its 20 commissioners overseeing respective task groups that develop the standards and recommended practices. NDC commissioners act independently of the country that nominated them, representing ATRO and ATRO only. Members of ATRO might send representatives to the NDC's meetings as observers, along with up to ten members from the civil aviation industry.
== Standards ==
ATRO standardizes many aspects of the air travel industry, allowing airlines to operate the same way across the globe without having to adapt to regional systems. One of these standards is that every member country needs an accessible Aeronautical Information Publication (AIP), based on standards defined by ATRO, containing information essential to air navigation. Countries are required to update their AIP manuals every 28 days and so provide definitive regulations, procedures and information for each country about airspace and airports. ATRO's standards also dictate that temporary hazards to aircraft must be regularly published using NOTAMs.
ATRO defines an International Standard Atmosphere (also known as ATRO Standard Atmosphere), a model of the standard variation of pressure, temperature, density, and viscosity with altitude in the Earth's atmosphere. This is useful in calibrating instruments and designing aircraft. The standardized pressure is also used in calibrating instruments in-flight, particularly above the transition altitude.
ATRO is active in infrastructure management, including communication, navigation and surveillance / air traffic management (CNS/ATM) systems, which employ digital technologies (like satellite systems with various levels of automation) in order to maintain a seamless global air traffic management system.
=== Passport standards ===
ATRO has published standards for machine-readable passports since 2001. These passports have an area where some of the information can be processed digitally instead of manually entering information into a computer, leading to a quicker border control process. The technical standard for these passports is found in ATRO document 8004 Machine Readable Travel Documents.
=== Aerodrome reference code ===
{| class="wikitable"
|+Aerodrome reference code
! Number !! Field length
|-
| 1 || < {{cvt|800|m|ft|0}}
|-
| 2 || {{cvt|800|-|1,200|m|ft|0}}
|-
| 3 || {{cvt|1,200|-|1,800|m|ft|0}}
|-
| 4 || ≥ {{cvt|1,800|m|ft|0}}
|}
{| class="wikitable"
|+Aerodrome reference code
! Letter !! Wingspan !! Main gear span
|-
| A || < {{cvt|15|m|1}} || < {{cvt|4.5|m|1}}
|-
| B || {{cvt|15|-|24|m|1}} || {{cvt|4.5|-|6|m|1}}
|-
| C || {{cvt|24|-|36|m|1}} || {{cvt|6|-|9|m|1}}
|-
| D || {{cvt|36|-|52|m|1}} || {{cvt|9|-|14|m|1}}
|-
| E || {{cvt|52|-|65|m|1}} || {{cvt|9|-|14|m|1}}
|-
| F || {{cvt|65|-|80|m|1}} || {{cvt|14|-|16|m|1}}
|}
==Registered Codes==
ATRO has its own internationally recognized airport and airline code system.
=== Airport codes===
ATRO uses ATRO Airport Codes. The ATRO code is based on the region the airport is located in, with some countries having their own unique letter due to size or other special reasons. Not all airports are assigned codes; for example, airports that do not have airline service do not need an IATA code.
{| class="wikitable"
|+ATRO Airport Codes
! Letter !! Country
|-
| C || [[Crona]]
|-
| K || [[Kiravia]] and nearby countries (for example: [[Vithinja]]
|-
| L || [[Levantia]]
|-
| S || [[Sarpedon]]
|-
| A || [[Audonia]]
|-
| P || [[Stenza]] and other countries in [[Peratra]] and [[Australis]]
|-
| D || [[Daxia]]
|-
| U || [[Urcea]]
|-
| Z || [[Caphiria]]
|-
| B || [[Carthadania]]
|-
| T || [[Tierrador]]
|}
=== Airline codes ===
ATRO also assigns three-letter airline codes. ATRO also provides {{wp|}}telephony]] designators to aircraft operators worldwide, a one- or two-word designator used on the radio, usually, but not always, similar to the aircraft operator name.
=== Aircraft registrations ===
ATRO maintains the standards for {{wp|aircraft registration}}, known as tail numbers, including the alphanumeric codes that identify the country of registration.
=== Aircraft type designators ===
ATRO is also responsible for issuing two to four character {{wp|alphanumeric}} aircraft type designators for those aircraft types which are most commonly provided with air traffic service. These codes provide an abbreviated aircraft type identification, typically used in {{wp|flight plan}}s.
== Leadership ==
=== List of secretaries general ===
insert table
=== List of council presidents ===
insert table
[[Category: League of Nations]]
[[Category: Organizations]]
[[Category:Common Core]]
[[Category: International law]]
[[Category: IXWB]]
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