Cockpit Task Distribution

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Cockpit Task Distribution

• Gerard Temme
• CAA-NL

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(No Transcript)
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The JAA study Human factors implications for
flight safety of recent developments in the
airline industry does not mention
cockpit/systems design as a factor
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Overview

• Interim Policy 25 / 14
• Why is task distribution important
• What defines task distribution
• Normal operation
• Non-Normal operation
• CRM versus tasks
• Options
• Getting the whole picture
• Early test vehicle

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Inetrim Policy 25/14

• Task Distribution considerations
• 1. The introduction of novel design features may
  potentially affect workload or awareness between
  crew or across time Some tasks may become more
  time consuming or exclusive. Such effects should
  be explored

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Interim Policy (contd.)

• 2. The quantity, similarity and function of
  tasks that are conducted through a single device
  or acces point should be investigated for peaks
  or bottlenecks at busy or critical periods.
• 3. The risks from task interruption (and
  potentially remaining incomplete) may also be
  related to design characteristics (menus).

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What defines Task Distribution

• Company procedures
• Culture
• Level of experience
• Seniority
• Religion
• Cockpit layout
• Display functionalities and reversion
• reachability
• Automation functionalities

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Why is task distribution important

• Reducing workload
• Enhancing SOPs
• Enhancing CRM (Actor/Monitor Actor/Manager)
• Reducing probability of Pilot Error

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Normal Operations

• Actor / Monitor
• Alternating roles
• Equally flyable from both sides
• Monitoring possible from both sides
• Automation programming (FMS, Autopilot)
• Automation logic (side in control)

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Non-Normal operations

• Actor / Manager
• Loss of input devices
• Loss of instruments
• Loss of automation
• Loss of controls
• Automation logic (side in control)
• Hardware to facilitate CRM principles

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CRM versus tasks

• CRM globaly accepted to improve performance
• Forced task distribution can frustrate critical
  CRM
• Forced task distribution result of cockpit design

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Options

• All options must be included in the evaluations

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Getting the whole picture

• Part Task testing is necessary but scenarios are
  normally tested on a finished product
• Full scenario testing only can reveal weaknesses
  in task distribution
• This testing should be done in an early stage of
  the design

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Early test vehicle

• In order to get the whole picture in an early
  stage a test vehicle is necessary
• Test vehicle in order to design and not only to
  prove for certification
• Test vehicle must be of such a quality that these
  goals can be achieved

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QUESTIONSorCoffee ?