Information (sources):
Same as for planning, except now it’s real data rather than estimated.

Stakeholders:
Same as for planning.

Specific Questions:
Q: Can you describe any nightmare scenarios?
A: Fog at the home airport, or snow. Power or communications disruptions. In these cases, you’re working nonstop diverting airplanes, keeping release times current, replanning for when the problem clears, and keeping ATC informed that when it does, it’s going to be a mad dash. Also, trying to prioritize arrivals and let the crews know what’s going on.
Q: How often does ATC reject your flight plan?
A: The centers often go down for maintenance. One departure location requires them to file flight plans by 5:00 Z because Chicago center goes down frequently. If the center goes down and comes back up, they have to refile to get a discreet beacon code assigned to the flights. At the home airport, they have standard departures; instead of rejections, what happens more often is that departure won’t have the takeoff clearance and the dispatcher will wonder why.

Appendix C
Flight deck planning/replanning function/information
analysis

The purposes of the analysis portion of this study are to:
.  
determine who the major stakeholders in the route planning process are

.  
determine what objectives each stakeholder has in the process

.  
determine what constraints each stakeholder must accommodate

.  
determine what functions must be performed to meet the identified goals

.  
allocate functions to stakeholders based on their goals

.  
determine the information requirements of each stakeholder

The results of this analysis will provide the functions and information requirements to be supported in the eventual system architecture. After completing the analysis, we provide a proposed architecture for flight deck systems based on the results; because the ground systems were not the primary focus of this work, we do not provide a similar depiction for the ground based systems.
Stakeholders:
The stakeholders in the current process include:
.  
passengers

.  
freight shippers

.  
aircraft operators

.  
pilots

.  
Air Traffic Controllers

.  
Traffic Flow Management

.  
Airline Operations Centers

These stakeholders can be categorized for analysis purposes into three general levels:

.  
individual aircraft control level (including pilots, passengers, and shippers)

.  
area control level (to include management of areas of airspace, currently the responsibility of FAA facilities and personnel)
　
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