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Evidence for an Issue 3 pieces of evidence for this issue.

data re-entry may be required (Issue #49) - Data entries may not propagate to related functions in automation devices. The same data may have to be entered more than once.

  1.  
  2. Evidence Type: Excerpt from Survey
    Evidence: 8 of the 30 (27%) respondents reported a 4 (= agree) or 5 (= strongly agree) with pc49 data re-entry may be required
    Strength: +2
    Aircraft: unspecified
    Equipment: automation
    Source: Lyall, E., Niemczyk, M. & Lyall, R. (1996). Evidence for flightdeck automation problems: A survey of experts. See Resource details

  3.  
  4. Evidence Type: Excerpt from Survey
    Evidence: 7 of the 30 (23%) respondents reported a 1 (=strongly disagree) or a 2 (=disagree) with pc49 data re-entry may be required
    Strength: -1
    Aircraft: unspecified
    Equipment: automation
    Source: Lyall, E., Niemczyk, M. & Lyall, R. (1996). Evidence for flightdeck automation problems: A survey of experts. See Resource details

  5.  
  6. Evidence Type: Excerpt from resource
    Evidence: "Loss of constraints after entering change: 20 cases. Pilots experienced with glass cockpit aircraft try to spread their workload by preprogramming the automation for highly dynamic phases of flight. For example, they tend to enter all necessary information concerning an anticipated or assigned approach into the multifunction control and display unit (MCDU) as early as possible. This includes the expected runway, standard arrival procedure, assigned altitudes, speed restrictions, and the minimum descent altitude. Most of the 2 0 surprises reported in this category involved a situation in which the pilot receives an amended clearance from air traffic control (ATC) assigning a new runway after the data for the originally assigned approach and runway have already been entered by the crew. Once the pilot changes the runway in the MCDU, the automation deletes all speed and altitude restrictions that were previously entered, even though they may still apply." (page 560)
    Strength: +1
    Aircraft: A-320
    Equipment: automation and FMS
    Source: Sherry, L. & Polson, P.G. (1999). Shared models of flight management system vertical guidance. International Journal of Aviation Psychology, 9(2), 139-153. Lawrence Erlbaum Associates. See Resource details
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