# Case Analysis: Payne Stewart-Physiology homework paper

Case Analysis: Payne Stewart-Physiology homework paper

In this case analysis, you will review, analyze, and determine the most likely cause of the crash of the airplane that was carrying Payne Stewart and his crew back in 1999. To get started, go to the NTSB Aviation Accident Database (https://www.ntsb.gov/_layouts/ntsb.aviation/index.aspx) and locate the NTSB report regarding the Payne Stewart crash. Next, based on what you have read and have learned in this module, surmise what was the most likely cause of the mishap. Please provide sound evidence for your conclusion by supporting it with information from the NTSB report and your new found knowledge of altitude physiology.

Case Analysis Guidelines by: Dr. Dave Worrells and Mr. Scott Burgess | ERAU, College of Aeronautics 1

ASCI 357 – SAMPLE Case Analysis

Robust Airline Schedule Planning

I. Summary

The construction of timetables for an airline is composed of aircraft and crew (Dunbar,

Froyland, and Wu, 2012). Crew cost is the biggest controllable expenditure for an airline, and

effective crew assignment is a very important aspect of planning (Gopalakrishnan and Johnson,

2005). Wensveen (2011) defines “airline scheduling as the art of designing system wide flight

patterns that provide optimum public service, in both quantity and quality, consistent with the

financial health of the carrier” (p. 360). An airline’s decision to offer certain flights is

dependent on market demand forecasts, available aircraft operating characteristics, available

work force, regulations, and the behaviour of competing airlines (Bazargan, 2010, p.31).

II. Problem

The problem is that the airline scheduling process in its entirety is very complex (Dunbar,

et al., 2012). Flight scheduling is the starting point for all other airline planning and operations

(Bazargan, 2010, p.31).

III. Significance of the Problem

The significance of the problem is that a vast number of rules and regulations associated

with airports, aircraft, and flight crews combined with the global expanse of air traffic networks,

require airline scheduling to be broken into manageable, traceable pieces (Dunbar, et al., 2012).

In 2006, the North American airline industry experienced a total of 116.5 million minutes of

delay, totalling a \$7.7 billion increase in operating costs (Dunbar, et al., 2012).

IV. Development of Alternative Actions

Alternative Action 1. Airline and railway mode of transportation industries to form an

intermodal alliance (Iatrou and Oretti, 2007, p.88).

Case Analysis Guidelines by: Dr. Dave Worrells and Mr. Scott Burgess | ERAU, College of Aeronautics 2

problems associated with road traffic and air quality around airports (Iatrou & Oretti, 2007, pp.

88-89). Iatrou & Oretti (2007) suggest an intermodal alliance near airports for better access to

city centers (p.89).

Disadvantages. The absence of interconnectivity, where air and rail industry have

different infrastructures with common rules and facilities (Iatrou & Oretti, 2007, p.89). High-

speed rail links to airports are not profitable in the short-term (Iatrou & Oretti, 2007, p.90).

Alternative Action 2: Increase flight schedules by extra minutes to boost on-time performance

(McCartney, 2012).

Advantages. Passengers would spend less time on aircraft (McCartney, 2012). Airlines

will have fewer planes sitting at terminal gates awaiting connecting passengers (McCartney,

2012).

Disadvantages. An aircraft departing late for a flight will run late for the rest of its flight

pattern for that day, and delays can grow exponentially (McCartney, 2012). A flight off the gate

late may find a long line of planes waiting to take off, or may find that the gate is no longer

available at its destination resulting in an extended wait period (McCartney, 2012).

V. Recommendation

Sequential airline schedule planning of aircraft routing and flight crew-pairing decisions

are to be made simultaneously. Sequential airline schedule planning may maximize profit by

minimizing flight crew and aircraft operating costs. If airline schedule planning increased

utilization of one resource, it would result in removal of slack, providing flight crews with less

time to connect between their flight legs, and aircraft would have a reduced time on ground

between flying.

Case Analysis Guidelines by: Dr. Dave Worrells and Mr. Scott Burgess | ERAU, College of Aeronautics 3

References

Bazargan, M. (2010). Airline operations and scheduling (2nd ed.). Burlington, VT: Ashgate

Publishing Company

Dunbar, M., Froyland, G., & Wu, C. (2012). Robust airline schedule planning: Minimizing

propagated delay in an integrated routing and crewing framework. Transportation

erau.edu/docview/1018549987?accountid=27203

Gopalakrishnan, B., & Johnson, E. L. (2005). Airline crew scheduling: State-of-the-art. Annals of

Operations Research, 140(1), 305-305. doi: 10.1007/s10479-005-3975-3

Iatrou, K., & Oretti, M. (2007). Airline choices for the future: From alliances to mergers.

Burlington, VT: Ashgate Publishing Company.

McCartney, S. (2012, Jun 14). The middle seat: Reality check: Why airlines are shrinking flight