The Capacity Cushion is the amount of reserve capacity a business maintains to handle sudden increases in demand or temporary losses of production capacity; it measures the amount by which the average capacity utilization falls below 100 percent.
Overview
Measuring the Capacity Cushion
Capacity and the Airline Industry
Maximizing Capacity in the Airline Industry
Airline Capacity Cushions – Overbooking
Dealing with Demand Fluctuations
Maximizing capacity in the airline industry is controlled by yield management through segregated ticket prices. Each fare price group is based on a certain percentage of available seats remaining on the flight - controlled by a computer algorithm. When the flight is initially created, prices are at a reasonable level to attract customers and cover fixed costs associated with the operation of the flight. As the departure date draws closer (within 2 weeks) the fares rise in price. At a predetermined point before the flight (2 or 3 days prior), prices are lowered in order to attract more passengers and fill the empty seats. Finally, on the departure date, fares are raised to attract those passengers that need to get on the flight on a last minute basis and are willing to pay whatever the cost. As bookings increase, cheaper fare levels disappear and higher fare prices remain. Finally, if there is excess capacity on a flight, airlines will either reduce the aircraft size or offer highly discounted ticket prices in order to maximize profits based on pure volume of passengers. Discounting tickets will not produce a high yield; however, because the seats are perishable, even a mere profit on the seats is better than leaving the seats empty.
Dealing with Demand Fluctuations
Due to the volatile nature of the airline industry, there are many contingency plans in effect to deal with demand fluctuations. Capacity can be adjusted to better meet demand and to better yield a profit for the airline. When demand is lagging, airlines can adjust the equipment that is used to operate a certain flight. By reducing available seat miles (ASM) airlines are able to decrease capacity. By reducing seats where demand lags, airlines are able to maintain a higher load factor. The load factor is the quotient of revenue passenger miles (RPM) divided by available seat miles and is a standard for measuring success in the industry. Theoretically, a higher load factor yields a larger profit margin. Although ASMs change only when aircraft with different seating capacities are swapped in order to complete a flight, RPMs fluctuate based on the amount of passengers carried on each flight segment. Figure 1 below shows three different seating charts for various Boeing 767 aircraft.
Figure 1: Boeing 767 seating chart
GOL Announces Traffic Statistics for September 2004. (2004, October 09). Retrieved February 09, 2008, from BNET: http://findarticles.com/p/articles/mi_m0EIN/is_2004_Oct_9/ai_n6229172
Ritzman, L. P., Krajewski, L. J., Malhotra, M. K., & Klassen, R. D. (2007). Foundations of Operations Management - 2nd Canadian ed. Toronto: Pearson Education Canada.
Wells, A. T.,Wensveen, J.G. (2004). Air Transportation, A Management Perspective, 5th Edition. Toronto: Nelson Thompson Learning.
R, H., & S, W. (1984). Restoring our Competitive Edge: Competing Through Manufacturing. John Wiley and Sons.
Boeing.(2008).Retrieved February 11,2008,from Boeing: http://www.boeing.com
Further Reading
http://www.armchair.com/info/overbook.html
http://www.airsafe.com/complain/bumping.htm
http://airconsumer.ost.dot.gov/publications/flyrights.htm#overbooking
http://www.rediff.com/money/2006/feb/04hol.htm
External Links
http://www.flightglobal.com/home/default.aspx
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