AIRAC stands for Aeronautical Information Regulation And Control
and steps from the Annex 15 - Aeronautical Information Services (AIS)
document and defines a series of common dates and an associated standard
aeronautical information publication procedure for States.
In short it defines that in all instances, information provided under
the AIRAC system shall be distributed by the Aeronautical Services (INDOAVIS)
unit at least 42 days in advance of the effective date with the
objective of reaching recipients at least 28 days in advance of the
effective date. Whenever major changes are planned and where additional
notice is desirable and practicable, a publication date of at least 56
days in advance of the effective date should be used.
Three dates are to be remembered from this:
Effective Date |
Date at which changes take
effect. |
Publication Date |
Date at which the AIS / (INDOAVIS)
organization sends out the information.
- Should be at least 42 days (56 for major changes) before
effect |
Reception Date |
Date at which the user should
receive the publications.
- Should be at 28 days before the effective date. |
The two weeks between
Publication date and Reception date is basically to allow for postal
distribution.
The AIRAC cycle
The AIRAC cycle was adopted in 1964 and further improved over the
years.
Key are the worldwide effective dates with 28 days intervals (e.g. 4
August 2005, 1 September 2005, 29 September 2005, ...). Effective
days are always on a Thursday.
It may look indeed like a long period, 28 days, or even 56, but it
should be understood that aeronautical information changes (mostly
published through so called AIRAC Amendments) require:
-
Changes to local
systems which includes interpreting, re-typing and re-coding the
information.
-
Verification and
Correction as publications are unfortunately seldom perfect.
-
Validation against
other data; Flight Plans are just one example.
-
Re-distribution.
Hereby think of Charts and Flight Management Systems to a fleet
which can be anywhere in the world.
The AIRAC effective dates
The AIRAC effective dates are published in ICAO Doc 8126, the
Aeronautical Information Services Manual, Table 2-1. Schedule of
AIRAC effective dates'.
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AIRAC adalah singkatan dari Aeronautical Information Regulation And
Control dan acuan berdasarkan dokumen Annex 15 - Aeronautical
Information Services (AIS) yang menentukan serangkaian tanggal dan
prosedur publikasi informasi aeronautika yang terkait untuk suatu
Negara.
Singkatnya, ini mendefinisikan bahwa dalam semua kasus, informasi yang
diberikan di bawah sistem AIRAC harus didistribusikan oleh unit
Aeronautical Services (INDOAVIS) paling sedikit 42 hari sebelum tanggal
efektif dengan tujuan mencapai penerima paling sedikit 28 hari sebelum
tanggal efektif. Kapan pun perubahan besar direncanakan dan bila ada
pemberitahuan tambahan yang diinginkan dan dapat dilakukan, tanggal
publikasi minimal 56 hari sebelum tanggal efektif harus digunakan.
Tiga tanggal harus diingat dari ini:
Tanggal
Berlaku |
Tanggal di mana perubahan mulai
berlaku. |
Tanggal
Penerbitan |
Tanggal di mana AIS /
Organisasi (INDOAVIS) mengirimkan informasi tersebut.
- Harus minimal 42 hari (56 untuk perubahan besar) sebelum
tanggal berlaku |
Tanggal
Penerimaan |
Tanggal di mana pengguna harus
menerima publikasi.
- Harus di 28 hari sebelum tanggal efektif. |
Dua minggu antara tanggal Publikasi dan Tanggal Penerimaan pada dasarnya
memungkinkan pendistribusian melalui jasa pos.
Siklus AIRAC
Siklus AIRAC diadopsi pada tahun 1964 dan terus ditingkatkan selama
bertahun-tahun.
Tanggal efektif adalah kunci yg digunakan di seluruh dunia dengan
interval 28 hari (misalnya 4 Agustus 2005, 1 September 2005, 29
September 2005, ...). Hari yang efektif selalu terjadi pada hari Kamis.
Mungkin memang terlihat seperti periode yang panjang, 28 hari, atau
bahkan 56, namun harus dipahami bahwa perubahan informasi aeronautika (kebanyakan
dipublikasikan melalui Amandemen AIRAC) memerlukan:
-
Perubahan pada sistem lokal yang
meliputi interpretasi, pengetikan ulang dan pengkodean ulang
informasi.
-
Verifikasi dan Koreksi sebagai
publikasi sayangnya jarang sempurna.
-
Validasi terhadap data lainnya; Rencana
Penerbangan hanyalah satu contoh.
-
Distribusi kembali Dengan ini, pikirkan
Charts and Flight Management Systems ke armada yang bisa berada
dimana saja di dunia ini.
Tanggal efektif AIRAC
Tanggal efektif AIRAC diterbitkan berdasarkan Doc. ICAO 8126,
Aeronautical Information Services Manual, Tabel 2-1. Jadwal tanggal
efektif AIRAC '. |