Operational Use of ADS-B In Non Radar Airspace Generic Desig(25)

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Generic Description Incorrect 24 bit code in the Flight Plan will cause the label to attach to the wrong aircraft. Note that this is less likely  when compared to the radar 12 bit code.
Hazard Cause/Initiating Events Incorrect coupling leading to increase in controller workload
  Initial Risk  Residual 
Risk 
  Likelihood  Remote  Remote 
  Consequence  Cat 3  Cat 3 
  Risk  D  D 
Existing Mitigation 

Safety Requirement Details 
Coupling  Ensure REG and 24 bit code are required for    coupling. Also, ensure no coupling untill   the flight plan is coordinated.
Airline procedures Ensure airline support the procedure of    providing REG and 24 bit code for all flight    plans for ADS B aircraft. Remind airline on   this requirement for aircraft swap procedure.
Provide ADS-B  Training and lesson plans to support air   training capability traffic control of  ADS-B equipped aircraft in    non radar airspace 
  Safety Function for  Route Adherence Monitoring processing (or similar) implemented in the   ADS-B tracks automation system for ADS-B tracks.
Project       ICAO SASPOperational Use of ADS-B in Non Radar Airspace

Hazard No. 32 Coupling and Decoupling parameters
Generic Description
Coupling and decoupling occur differently from radar therefore may confuse controllers

Hazard Cause/Initiating Events
There is different in coupling requirements between ADS B and radar.

  Initial Risk  Residual 
Risk 
  Likelihood  Probable  Probable 
  Consequence  Cat 4  Cat 4 
  Risk  D  D 
Existing Mitigation 

Safety Requirement Details 
ADS-B Training  Provision of an ADS-B training system  
System capability on ground simulator.

Adequate ATC  Ensure adequate training and assessment of 
training and   controller for rating. 

Project ICAO SASPOperational Use of ADS-B in Non Radar Airspace

Hazard No. 33 Wrong positional data
Generic Description
Incorrect positional data being reported by an aircraft due to a problem with the avionics (hardware or software) -
NUC 
still better than 4.

Hazard Cause/Initiating Events
A momentary track jump similar to  automatic position reporting in radar.

  Initial Risk  Residual 
Risk 
  Likelihood  Remote  Remote 
  Consequence  Cat 3  Cat 3 
  Risk  D  D 
Existing Mitigation 

Safety Requirement Details  
Safety Function for  Route Adherence Monitoring processing (or similar) implemented in the   ADS-B tracks automation system for ADS-B tracks. 
Checking of ADS-B a/c Procedures shall be developed for cross     ident checking of ADS-B positional data with data    provided by other navigational systems (not   GPS) in certain circumstances.
Parity check on data  Ensure parity check is available for all data   transmitted transmitted
Coupling  Ensure REG and 24 bit code are required for   coupling. Also, ensure no coupling until   the flight plan is coordinated.
 Project ICAO SASPOperational Use of ADS-B in Non Radar Airspace Hazard No. 34 Incorrect position decoded by Ground Station Generic Description Position of aircraft may be in the incorrect position when the range exceed 180NM due to decoding process adopted.  
(local unambiguous) 
　
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