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CPDLC Procedures: Recommendations for General System Performance Requirements, Design of Standard Operating Procedures and Operating Limitations for CPDLC
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2011-08-31
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[PDF-4.89 MB]
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Edition:Final Report
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Abstract:Honeywell explored the limitations and capabilities of the Controller/Pilot Data Link Communications (CPDLC) interface with aircraft navigation and guidance systems. This report contains sections describing a literature review, an engineering analysis methods and results, and recommendations. The literature review covers an overview of differences in human-machine interface (HMI) among the platform types, LOADABLE ATC clearances, equipage levels among new generation and legacy Boeings, data entry checking features, and a section on new technology that may impact CPDLC in the future. The engineering analysis sections describe the analysis methodology and the results of observed capabilities and limitations for each Boeing platform based on the simulator analysis. The recommendations section includes recommendations for CPDLC crew procedures, compliance with CPDLC procedures, system design, and future research. Both manual and autoloading CPDLC functions were evaluated in a real-time nominal ‘flight.’ A variety of air traffic control (ATC) uplink message (UM) elements were selected based on clearance auto-loading into the flight management system (FMS), message complexity and category. Message categories included concatenated, conditional and route modification, speed, altitude, and time (Required Time of Arrival (RTA)) messages. The analysis used several platforms, including first generation FMS and glass cockpit aircraft and newer generation aircraft with graphical user interface (GUI) displays and cursor controls. Aircraft used in the study included the Boeing 787, Boeing 777, Boeing 744, and the Boeing-733. An important consideration was to understand the proper task sequences in retrieving and responding to each ATC uplink message so that error-free and compatible procedures could be developed. Once an ATC uplink was sent to the on-board CPDLC system, it was necessary to understand all the crew tasks required to retrieve the message, evaluate the clearance, and configure the automation to execute the clearance. Only ATC uplink clearances were evaluated.
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