AIDC Implementation in Hong Kong, China

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AIDC Implementation in Hong Kong, China

• APAC/NAT AIDC TF/2 - AIDC Seminar
• Stanley Lau
• Ag. Senior Electronics Engineer
• Civil Aviation Department
• Hong Kong, China
• 23 July 2013

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Background

• Hong Kong, China has put AIDC into operational
  use between HK and Sanya since Feb 2007.
• Standalone system use real-time data from ATM
  System.
• Further AIDC technical tests have been conducted
  with other ACCs such as Guangzhou, Zhangjiang,
  Taibei
• HK and Taibei AIDC operation commenced on 16 Nov
  2012.
• Success in reduction of ATM personnel workload
  and elimination of human errors arising from
  voice communications via Inter Area Speech
  Circuit (IASC).

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Operation Efficiency

• Using subset of core messages, namely, EST, ACP,
  LAM, LRM as well as TOC and AOC with Sanya
  recently (28 Mar 2013) out of the 13 core
  messages as agreed with counterparts in
  accordance with APAC AIDC ICD and ICAO ASBU
  B0-25.
• Efficiency gained by utilizing AIDC is
  significant. e.g. in Dec 2012, about 29,000
  transactions (HK-Sanya and HK-Taibei) were
  completed, representing the equivalent number of
  IASC calls were saved. Less than 6 of
  transactions reverted to voice, including missing
  flight plans, late/fail AFTN transmissions as
  well as operation needs.
• Expecting more extensive AIDC usage in new ATMS.

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Implementation Issues

• Different versions of AIDC messages and Cyclic
  Redundancy Check (CRC) initial values (Xmodem,
  Kermit, 0xffff and 0x1d0f) being utilized, AIDC
  partners require to indicate which ICD version
  and CRC initial values during technical testing.
• LRM and error code/messages feedback from
  counterparts needed to be captured in the Problem
  Message Queue (PMQ) of the ATM System and require
  prompt response to the counterparts e.g. voice
  coordination.
• AFTN and subsequent ATN network with inherent
  network latency, circuit diversion/re-route or
  system maintenance of the network that will
  affect the timeliness of AIDC messages, which are
  considered as time- and mission-critical.

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Thank You

• Reference APAC ATNICG/8 WP17
  (http//www.bangkok.icao.int/cns/meeting.do?method
  downloadyear_id16meeting_id271doc_id3610)