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Testimony:

Before the Subcommittee on Aviation, Committee on Transportation and 
Infrastructure, House of Representatives:

United States General Accounting Office:

GAO:

For Release on Delivery Expected at 10:00 a.m. EDT:

Thursday, June 3, 2004:

Commercial Aviation:

Despite Industry Turmoil, Low-Cost Airlines Are Growing and Profitable:

Statement of JayEtta Z. Hecker, Director 
Physical Infrastructure:

GAO-04-837T:

GAO Highlights:

Highlights of GAO-04-837T, a report to Subcommittee on Aviation, 
Committee on Transportation and Infrastructure 

Why GAO Did This Study:

Since 2001, the U. S. airline industry has confronted financial losses 
of previously unseen proportions. From 2001 through 2003, the industry 
reported losses of about $23 billion, and two of the nation’s largest 
airlines went into bankruptcy. Since September 11, 2001, the U.S. 
government has provided struggling airlines with $7.0 billion in 
direct assistance and many billions more in indirect assistance in the 
form of loan guarantees, a tax holiday, and pension relief. Under the 
2003 Emergency Wartime Supplemental Appropriations Act (P.L. 108-11) 
and Vision 100--Century of Aviation Reauthorization Act (P.L. 108-176), 
Congress mandated that GAO review measures taken by air carriers to 
reduce costs, improve their revenues and profits, and strengthen their 
balance sheets. Later this year, GAO will provide a report to Congress 
in response to these mandates. This statement provides a preliminary 
summary of that work and focuses on three main questions: (1) What 
have been the major challenges to the airline industry since 1998? (2) 
What cost-cutting measures have airlines reported taking to remain 
financially viable? (3) What is the financial condition of the airline 
industry?

What GAO Found:

U.S. airlines, particularly major network or “legacy” airlines, have 
faced an unprecedented set of challenges since 1998 that have reshaped 
the industry and reduced the demand for air travel. Within the 
industry, the growth of the Internet as a means to sell and distribute 
tickets and the emergence of well-capitalized low-cost airlines as a 
powerful market force have created unprecedented pressures on how 
airlines operate and price their products. Coincidently, a series of 
largely unforeseen events—among them a steep decline in business 
travel, the September 11th terrorist attacks, war in the Middle East, 
and global recession---have combined to seriously disrupt the demand 
for air travel. 

To counter these challenges, airlines undertook very different 
strategies. Legacy airlines sought to cut costs, while low-cost 
airlines took advantage of legacy airlines’ retrenchment and expanded. 
Legacy airlines collectively reported a reduction in operating costs 
of $12.7 billion (14.5 percent) between the October 1, 2001 
(immediately after September 11th) and the end of 2003. The reductions 
occurred in nearly all areas of operations, but 43 percent of the 
savings came from labor. Legacy airlines reduced their seat capacity by 
12.6 percent as they reduced operations and shifted service to their 
regional airline partners. Conversely, low-cost airlines increased 
seating capacity by 26.1 percent as they expanded their operations, 
and operating expenses actually increased by just over $1 billion (9.8 
percent). 

Since 2000, the financial condition of legacy airlines, as a group, 
has deteriorated significantly. Despite their cost-cutting efforts, 
legacy airlines’ unit costs have not declined, and low-cost airlines 
enjoy even a greater cost competitive advantage. Meanwhile, neither 
legacy nor low-cost airlines have been able to significantly improve 
their revenues owing to weak fare growth and overcapacity in the 
system. As a result, legacy airlines have recorded nearly $25 billion 
in operating losses since 2001, while low-cost airlines have remained 
profitable throughout. Two major legacy airlines have already declared 
bankruptcy; others may follow.

Legacy Airlines Have Recorded Nearly $25 billion in Operating Losses 
Since 2001: 

[See PDF for image]

Source: GAO analysis of Department of Transportation Form 41 data

[End of figure]

What GAO Recommends:

GAO is making no recommendations in this statement.

www.gao.gov/cgi-bin/getrpt?GAO-04-837T.

To view the full product, including the scope and methodology, click on 
the link above. For more information, contact JayEtta Z. Hecker, 202-
512-2834, HeckerJ@gao.gov.

[End of section]

Mr. Chairman and Members of the Subcommittee:

We appreciate the opportunity to participate in today's hearing to 
discuss the financial condition of U.S. airlines. Since 2001, the U. S. 
airline industry has confronted financial losses of unprecedented 
proportions. From 2001 through 2003, the industry reported losses of 
$23 billion, and two of the nation's largest airlines went into 
bankruptcy. Following the tragic terrorist attacks of September 11, 
2001, the U.S. government has provided struggling airlines with $7.0 
billion in direct assistance and many billions more in indirect 
assistance in the form of loan guarantees, a tax holiday, and pension 
relief.[Footnote 1] The most recent assistance to airlines came in 
April 2003, under the 2003 Emergency Wartime Supplemental 
Appropriations Act (P.L. 108-11). The federal government provided $2.4 
billion to the airline industry, and Congress mandated that the GAO 
review measures taken by airlines to reduce costs, improve their 
revenues and profits, and strengthen their balance sheets. Subsequent 
to P.L. 108-11, in December 2003, Congress provided a similar mandate 
under the Vision 100--Century of Aviation Reauthorization Act for GAO 
to report on the financial condition of the U.S. airline industry. 
Later this year GAO will provide a report to Congress in response to 
these mandates. Although we are still gathering and analyzing 
information in response to these mandates, my statement today provides 
a preliminary look at some of our findings. My remarks today address 
three main questions: (1) What have been the major challenges to the 
airline industry since 1998? (2) What cost cutting measures have 
airlines reported taking to remain financially viable? (3) What is the 
financial condition of the airline industry?

My statement today focuses on the seven legacy and seven low-cost 
airlines that accounted for 90 percent of all domestic airline industry 
seat capacity in 2003.[Footnote 2] Legacy airlines are essentially 
those airlines that were in operation before airline deregulation in 
1978 and whose goal is to provide service from "anywhere to 
everywhere." To meet this goal, these airlines support large, complex 
hub-and-spoke operations with thousands of employees and hundreds of 
aircraft (of various types) with service to domestic communities of all 
sizes as well as international points at numerous fare levels. Legacy 
airlines contract with, or separately operate, smaller regional 
airlines to provide service to smaller communities. Low-cost airlines, 
except Southwest,[Footnote 3] entered the market after deregulation and 
generally operate point-to-point service using fewer types of aircraft. 
These airlines typically offer a simplified fare structure and 
generally do not offer international service outside of Canada, Central 
America, and the Caribbean. Although there is variation among the 
airlines in each of these groups, there are far more similarities than 
differences. Most importantly, the seven low-cost airlines consistently 
had lower unit costs than the seven legacy airlines between 1998 and 
2003. To determine the major challenges that airlines have faced, we 
examined prior GAO work and research by various industry experts. To 
determine the cost-cutting measures airlines took and to assess the 
industry's financial condition, we analyzed financial and operating 
data reported by airlines to the Department of Transportation (DOT). To 
assess the reliability of those data, we reviewed the quality control 
procedures that DOT applies and subsequently determined that the data 
were sufficiently reliable for our purposes. We performed our work in 
accordance with generally accepted government auditing standards.

In summary:

* U.S. airlines, particularly legacy airlines, have faced a sweeping 
set of challenges since 1998. These challenges are both internal 
factors reshaping the airline industry and external events that sharply 
reduced the demand for air travel. Within the airline industry, even 
before September 11th, the growth of the Internet as a means to sell 
and distribute tickets and the emergence of well-capitalized low-cost 
airlines as a powerful market force created tremendous competitive 
pressures on airlines. At the same time, a series of largely unforeseen 
events--among them the September 11th terrorist attacks and associated 
security concerns, war in the Middle East, the SARs epidemic, global 
economic downturn, and a decline in business travel---seriously 
disrupted the demand for air travel.

* To overcome the many challenges of the last several years, the two 
groups of airlines undertook very different strategies. Legacy airlines 
sought to cut costs, while low-cost airlines took advantage of legacy 
airlines' retrenchment and expanded. Legacy airlines collectively 
reported a reduction in operating costs of $12.7 billion (14.5 percent) 
between the October 1, 2001 (immediately after September 11th) and the 
end of 2003. The reductions occurred in nearly all areas of operations, 
with the single largest reduction coming from labor costs that were 
reduced $5.5 billion. During this time period, legacy airlines reduced 
their seat capacity by 12.6 percent by shifting traffic to regional 
airline partners and grounding aircraft. Conversely, low-cost airlines' 
operating expenses increased by just over $1 billion (9.8 percent); and 
their seat capacity increased by 26.1 percent as they expanded their 
operations.

* Since 2000, the financial performance and viability of legacy 
airlines has deteriorated significantly compared with low-cost 
airlines. Legacy airlines have collectively lost $24.3 billion over the 
last 3 years, while low-cost airlines made $1.3 billion in profits. 
Despite the cost-cutting efforts of legacy airlines over the last 
couple of years, legacy airlines are even less cost competitive 
relative to low-cost airlines than in 2000. Low-cost airlines still 
maintain a significant unit cost advantage over legacy airlines despite 
legacy airline cost cutting. Meanwhile, neither legacy nor low-cost 
airlines have been able to significantly improve their revenues owing 
to weak fare growth. As a result of their weak performance and mounting 
losses, legacy airlines' financial condition has also deteriorated, and 
they face considerable debt and pension obligations in the next few 
years. At least one other legacy airline has announced that, like 
USAirways and United Airlines in 2002, it may enter bankruptcy this 
year.

U.S. Airline Industry Is Facing Significant Challenges:

A series of significant changes and unforeseen events during the last 
several years has presented the airline industry with its most 
significant challenges since it was deregulated 25 years ago. These 
challenges have come from within the industry as well as from external 
factors affecting the demand for air travel.

Internal Challenges Lead to Structural Changes:

Since the late 1990s, the U.S. airline industry, especially legacy 
airlines, has faced several internal challenges that have altered the 
way it operates. Foremost among these challenges is addressing 
declining yields brought on by price transparency and competition. The 
airlines' increased use of the Internet to reduce ticket distribution 
costs.[Footnote 4] However, the price transparency the Internet 
provides has empowered consumers searching for the lowest fares and 
depressed fare levels. The emergence of well-capitalized low-cost 
airlines has also been a significant challenge. Although earlier new 
entrant airlines quickly disappeared, this recent group is better 
capitalized and offers a good overall product. Between 1998 and 2003, 
these low-cost airlines increased their presence in the 5,000 largest 
city pair markets (e.g., New York - Boston) from 32 to 46 percent and 
increased overall market share of passenger enplanements from 23 to 33 
percent.

External Shocks Have Depressed Demand for Air Travel:

Demand for air travel began weakening in 2000, well before the 
September 11th terrorist attacks. An economic downturn that began in 
2000 depressed airline revenues, and the terrorist attacks of September 
11th, the Iraq war, and the outbreak of Severe Acute Respiratory 
Syndrome (SARS) have compounded this trend. These events have 
contributed to a change in the demand for air travel that is likely to 
suppress revenues for the foreseeable future, including the inability 
of airlines to charge premium business fares. Although it is impossible 
to isolate the effect of various events, demand as measured by revenue 
passenger miles (RPMs), was down 6.5 percent and 11.4 percent for 2001 
and 2002, respectively, from the Federal Aviation Administration's 
(FAA) June of 2001 forecasts.

In Response to Challenges, Legacy Airlines Reduced Costs and Cut 
Capacity, While Low-Cost Airlines Grew:

Airlines responded very differently to the challenges of the last few 
years. Legacy airlines faced with mounting losses and curtailed demand 
for air travel sought to reduce capacity and along with it their 
operating expenses. Low-cost airlines, already enjoying a cost 
advantage over legacy airlines, used their competitive cost advantage 
to grow.

Legacy airlines cut operating expenses by $12.7 billion between October 
1, 2001, and December 31, 2003. This 14.5 percent reduction in 
operating expenses exceeds the percentage reduction in seat capacity of 
12.6 percent during the same period. According to airline financial 
reports to DOT, legacy airline labor costs were reduced $5.5 billion 
annually, or about 16 percent during this time period (see fig. 1). 
Both USAirways and United signed new labor agreements while in 
bankruptcy, and American Airlines also achieved new agreements while on 
the verge of bankruptcy. Legacy airlines also achieved $2.1 billion 
savings from a 59 percent reduction in the commissions paid to travel 
agents, because those commissions were sharply reduced. Finally, legacy 
airlines reduced fuel costs by 18.7 percent during the period, although 
the recent upsurge in fuel prices has reversed these savings. The only 
cost category to increase for legacy airlines was transport-related 
expenses, which doubled during the period, an increase of $3.9 billion. 
Increases in transport-related expenses for legacy airlines are largely 
because of fees paid to regional airline partners for providing 
regional air service. In the aftermath of September 11th, legacy 
airlines shifted some of their routes over to regional airlines in an 
attempt to reduce seat capacity on these routes.

Figure 1: Change in Legacy Airline Costs, Oct. 1, 2001 to Dec. 31, 
2003:

[See PDF for image]

Note: Other includes fees, taxes, and other charges; filing costs, 
membership dues, and losses.

[End of figure]

Meanwhile, low-cost airlines used legacy airlines retrenchment as an 
opportunity to expand. The seven low-cost airlines increased seat 
capacity by 26.1 percent during the same period that legacy airlines 
cut capacity by 12.6 percent, but total operating costs for low-cost 
airlines increased by a more modest 9.8 percent, or a little more than 
$1 billion. Low-cost airlines' labor costs, these airlines' largest 
single cost component increased over $750 million, or 21 percent (see 
fig. 2). Despite their growth, low-cost airlines were able to achieve 
small reductions in some of their other costs, including commissions, 
passenger food, depreciation and amortization, and transportation 
related expenses.

Figure 2: Change in Low-cost Airline Costs, Oct. 1, 2001, to Dec. 31, 
2003:

[See PDF for image]

Note: Other includes fees, taxes, and other charges; filing costs, 
membership dues, and losses.

[End of figure]

Legacy Airlines' Financial Performance Trails Low-cost Airlines:

The financial performance of U.S. airlines since 2000 has followed two 
very different paths. Despite significant cost-saving initiatives and 
industry-wide traffic volumes approaching pre-September 11th levels, 
legacy airlines continue to lose money. Legacy airlines' unit costs 
(cost to fly one seat 1 mile) have increased since 2000 while fares 
have declined; as a result, these airlines have yet to regain 
profitability. Meanwhile, low-cost airlines continue to expand market 
share, enjoy a greater unit cost advantage over legacy airlines than 
they did in 2000, and in all but one quarter have collectively earned a 
profit. The weak performance of the legacy airlines over the last 3 
years has significantly diminished their financial condition; as a 
result, some of these airlines are vulnerable to bankruptcy, especially 
if there are additional shocks to the industry.

Low-Cost Airlines Have Significantly Lower Unit Costs Than Legacy 
Airlines:

Legacy airlines, as a group, have been unsuccessful in sufficiently 
reducing their costs to make them more competitive with low-cost 
airlines. Unit cost competitiveness is key to profitability for 
airlines because airlines have found it extremely difficult to increase 
their revenues in the current environment. While legacy carriers 
reduced their overall operating expenses over the last three years, 
these cuts largely paralleled legacy airlines' capacity reductions. 
Conversely, low-cost airlines have been able to reduce their unit costs 
through expansion. Low-cost airlines' ability to maintain lower labor 
costs and lower asset-related costs accounts for the majority of the 
unit cost differences between low-cost airlines and legacy airlines.

Wall Street analysts suggested that one of the best measure for 
examining airline unit cost performance is to compare airline unit cost 
curves. These curves relate airlines' unit costs to the stage length 
(distance) flown. Figure 3 shows legacy and low-cost airline unit cost 
curves for 2000 and 2003 and shows that the gap between legacy and low-
cost airline unit costs has widened across all distances. For example, 
in 2000, at a 1,000-mile stage length legacy airlines' unit costs were 
45 percent higher than low-cost airlines; by 2003, legacy airlines' 
unit costs were 67 percent higher. Some of the legacy airline unit cost 
increase is due to the capacity purchased from regional airlines--an 
increase in operating expenses (the numerator) but without a 
corresponding increase in available seat miles (the denominator) in the 
unit cost calculation. However, this does not account for all or even 
most of the gap between legacy and low-cost airlines' unit costs.

Figure 3: Stage Length Cost Curves, 2000 and 2003:

[See PDF for image]

[End of figure]

To account for this unit cost difference between legacy and low-cost 
airlines, we also examined legacy and low-cost airline unit costs over 
time and the various cost items that comprise total operating expenses. 
Overall, we found that the gap in aggregated (for all stage lengths) 
unit costs for legacy and low-cost airlines has widened since 2000, 
from 2.1 cents per available seat mile to 3.8 cents at the end of 2003. 
Figure 4 shows this widening gap and the cost components that account 
for the difference.

Figure 4: Unit Cost Differential, 1998 to 2003:

[See PDF for image]

[End of figure]

The two primary cost components that comprise the unit cost difference 
between legacy airlines and low-cost airlines are labor costs and 
asset-related costs.

* Legacy airlines have high labor costs owing to a highly tenured, 
unionized workforce, while low-cost airlines are able to keep labor 
costs down because of a younger and lower paid work force but also by 
achieving higher levels of labor productivity than legacy airlines.

* Legacy airlines have higher asset-related costs than low-cost 
airlines because legacy airlines generally have older fleets and more 
types of aircraft in their fleets than low-cost airlines. Legacy 
airlines also put their planes in the air fewer hours per day than low-
cost airlines. Finally, some portion of this difference is due to 
legacy airlines' purchase of regional airline capacity during the 
period.

* Other costs that currently are part of the remaining unit cost 
difference between legacy airlines and low-cost airlines include 
expenses for fuel, passenger ticketing commissions, and passenger food.

Depressed Fares Have Impeded Revenue Growth For Legacy Airlines:

Both legacy and low-cost airlines have encountered weak revenues over 
last several years. The internal and external factors cited earlier 
have depressed fares and demand for air travel. Overall, industry-wide 
demand has nearly returned to pre-September 11th levels, but fares have 
not. Unit revenue, or yield, the amount of revenue airlines collect for 
every mile a passenger travels, has fallen 19 percent from the first 
quarter of 2000 through the fourth quarter of 2003, for the airlines 
examined in this study. The trends are similar for both the legacy 
airlines and low-cost airlines; legacy yields dropped about 19 percent, 
and low-cost airline yields dropped about 18 percent (see Figure 5). 
Although nearly as many passengers are flying as before September 11th, 
they are paying less to do so. In addition, legacy airlines are losing 
market share to the low-cost airlines. Demand, as measured in the 
number of miles paying passengers were transported, is down over 10 
percent for the legacy airlines since 2000; demand for low-cost 
airlines has risen nearly 40 percent. Not only are legacy airlines 
collecting less fare revenue from the passengers they fly, they are 
also flying fewer passengers than they used to. Low-cost airlines are 
flying more passengers at lower prices.

Figure 5: Percentage Change in Airline Fares and Demand Since 2000:

[See PDF for image]

Note: Yield is the amount of fare revenue collected for each passenger 
mile flown. Revenue Passenger Mile (RPM) is a measure of the number of 
miles each paying passenger is flown and a standard measure of airline 
passenger demand.

[End of figure]

Low-Cost Airlines Are Profitable Owing to Lower Costs:

Low-cost airlines have been able to use their relative cost advantage 
to remain profitable at a time when fares are down throughout the 
industry. As figure 6 demonstrates, legacy airlines have lost money in 
each of the last 3 years, for a total of $24.3 billion; low-cost 
airlines have made money in every year.

Figure 6: Airline Profits and Losses, 1998-2003:

[See PDF for image]

[End of figure]

Legacy Airlines' Financial Condition Has Deteriorated Since 2000:

Since 2000, the financial condition of legacy airlines has 
deteriorated. Both legacy airlines and low-cost airlines increased 
their cash balances following the events of September 11th; legacy 
airlines did so primarily through borrowing, while low-cost airlines 
increased theirs by generating profits as well as borrowing. Since 
2001, legacy airlines have taken on more debt, relying on creditors for 
more of their capital needs than they have in the past. Increased debt 
increases interest expenses and can make raising additional capital 
more expensive. Low-cost airlines have acquired some debt, but their 
solvency (or ability to repay the debt) has not deteriorated to the 
same extent as it has for legacy airlines. In the process of taking on 
additional debt, several legacy airlines have used all, or nearly all, 
of their assets as collateral, limiting their access to capital 
markets.

Legacy airlines face large debt repayment and pension funding 
obligations during the next 4 years. These fixed obligations greatly 
exceed the current cash balances for many of the legacy airlines. For 
example, legacy airlines had a collective cash balance of $6.8 billion 
at the close of 2003 versus $19.2 billion of long-term debt and capital 
leases (a fixed obligation similar to long-term debt) coming due 
through 2007. In contrast, low-cost airlines had a collective cash 
balance of $3.5 billion versus long-term debt and capital lease 
obligations of $2.1 billion coming due through 2007. If legacy 
airlines' debt cannot be refinanced, some legacy airlines might be 
forced to enter bankruptcy. In addition, legacy airlines have 
significant defined benefit pension funding obligations that low-cost 
airlines do not. Recent pension reform legislation postpones a portion 
of legacy airlines' requirements to make payments to their defined 
benefit pension plans in 2004 and 2005,[Footnote 5] but are still 
required to fully fund these plans in the years beyond.[Footnote 6] 
Because legacy airlines' future access to capital markets appears to be 
limited, these airlines will need to begin generating cash from 
operations if they intend to fulfill their future financial obligations 
and avoid bankruptcy.

Concluding Observations:

Although the airline industry was deregulated more than 25 years ago, 
some of the most significant competitive changes are only now occurring 
brought about by a myriad of challenges over the last 4 years. Before 
2000, large legacy airlines, all of which predated deregulation, 
dominated the domestic airline industry. These airlines competed on the 
basis of their networks and in-flight amenities as well as fares; they 
earned profits by maximizing revenues from high value business 
travelers. Low-cost airlines competed in some markets, but as a whole 
did not account for much more than 10 percent of the market, and they 
rarely took on a legacy airline directly. However, in recent years, 
this pattern has changed, perhaps permanently. Significant structural 
change combined with severe demand shocks has presented unprecedented 
challenges to the airline industry, especially for legacy airlines. 
Legacy airlines, burdened by significant costs of labor contracts and 
pension plans negotiated during profitable years and an extensive and 
costly network infrastructure, have found it difficult to reduce costs 
quickly enough to become cost competitive and restore profitability. 
Meanwhile, low-cost airlines are using their cost advantage to expand 
their market share and challenge legacy airlines like never before. 
Although airline industry traffic has recovered to pre-September 11th 
levels, profitability for legacy airlines has not, owing to higher 
costs and weak fare growth. Three years of losses have left legacy 
airlines in a weakened financial position with large debt and pension 
obligations looming in the next few years. The potential for airlines 
to earn the large profits of 1995-2000 does not appear possible. 
Instead, the airline industry is being transformed into two industries, 
profitable low-cost point-to-point airlines that continue to grow and 
extend their reach into ever more markets and the major network legacy 
airlines that account for the vast majority of the industry's losses. 
Although legacy airlines still control two-thirds of all domestic 
traffic, possess profitable overseas routes, and have a valuable 
domestic route structure, until these airlines are able to bring their 
unit costs closer to those of low-cost airlines and align their 
services with fares that passengers are willing to pay for "anywhere to 
everywhere" networks, they are unlikely to be able improve their 
financial condition.

This concludes my statement. I would be pleased to respond to any 
questions that you or other Members of the Subcommittee may have at 
this time.

For further information on this testimony, please contact JayEtta 
Hecker at (202) 512-2834 or by e-mail at heckerj@gao.gov. Individuals 
making key contributions to this testimony include Paul Aussendorf, Tom 
Gilbert, Grant Mallie, Steve Martin, Richard Swayze, and Pamela Vines.

FOOTNOTES

[1] For more information on prior GAO work related to these issues, see 
Summary Analysis of Federal Commercial Aviation Taxes and Fees, 
GAO-04-406R, March 12, 2004, Aviation Assistance: Information on 
Payments Made under the Disaster Relief and Insurance Reimbursement 
Programs, GAO-03-1156R, September 17, 2003, and Financial Management: 
Assessment of the Airline Industry's estimated Losses Arising From the 
Events of September 11, GAO-02-133R, October 21, 2001.

[2] The legacy airlines included in our analysis are Alaska, American, 
Continental, Delta, Northwest, United, and US Airways. The low-cost 
airlines are AirTran, America West, ATA, Frontier, JetBlue, Southwest, 
and Spirit. 

[3] Southwest operated within Texas before deregulation. 

[4] Airline Ticketing: Impact of Changes in the Airline Ticket 
Distribution Industry, GAO-03-749, Washington, D.C.: July 31, 2003.

[5] Pension Fund Equity Act of 2004 (Public Law 108-218, April 10, 
2004). The law temporarily replaces the interest rate on 30-year U.S. 
Treasury Bonds with an interest rate based on the average rate of 
return on high-quality long-term corporate bonds and allows airlines to 
postpone part of their necessary contributions for 2004 and 2005.

[6] Defined benefit plans promise a fixed payment amount in the future. 
In contrast, the defined contribution plans employed by low-cost 
airlines fix the current contribution amount, but the future payment 
amount depends on returns on the pension assets.