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Wiki Wiki Summary
Airline deregulation Airline deregulation is the process of removing government-imposed entry and price restrictions on airlines affecting, in particular, the carriers permitted to serve specific routes. In the United States, the term usually applies to the Airline Deregulation Act of 1978.
Low-cost carrier A low-cost carrier or low-cost airline (occasionally referred to as no-frills, budget or discount carrier or airline, and abbreviated as LCC) is an airline that is operated with an especially high emphasis on minimizing operating costs and without some of the traditional services and amenities provided in the fare, resulting in lower fares and fewer comforts. To make up for revenue lost in decreased ticket prices, the airline may charge extra fees – such as for carry-on baggage.
December December is the twelfth and the final month of the year in the Julian and Gregorian calendars. It is also the last of seven months to have a length of 31 days.
December 17 December 17 is the 351st day of the year (352nd in leap years) in the Gregorian calendar; 14 days remain until the end of the year.\n\n\n== Events ==\n\n\n=== Pre-1600 ===\n497 BC – The first Saturnalia festival was celebrated in ancient Rome.
December 10 December 10 is the 344th day of the year (345th in leap years) in the Gregorian calendar; 21 days remain until the end of the year.\n\n\n== Events ==\n\n\n=== Pre-1600 ===\n1317 – The "Nyköping Banquet": King Birger of Sweden treacherously seizes his two brothers Valdemar, Duke of Finland and Eric, Duke of Södermanland, who were subsequently starved to death in the dungeon of Nyköping Castle.
December 1 December is the twelfth and the final month of the year in the Julian and Gregorian calendars. It is also the last of seven months to have a length of 31 days.
December 26 December 15 is the 349th day of the year (350th in leap years) in the Gregorian calendar; 16 days remain until the end of the year.\n\n\n== Events ==\n\n\n=== Pre-1600 ===\n533 – Vandalic War: Byzantine general Belisarius defeats the Vandals, commanded by King Gelimer, at the Battle of Tricamarum.
December 31 December 3 is the 337th day of the year (338th in leap years) in the Gregorian calendar; 28 days remain until the end of the year.\n\n\n== Events ==\n\n\n=== Pre-1600 ===\n915 – Pope John X crowns Berengar I of Italy as Holy Roman Emperor (probable date).
December 8 December 3 is the 337th day of the year (338th in leap years) in the Gregorian calendar; 28 days remain until the end of the year.\n\n\n== Events ==\n\n\n=== Pre-1600 ===\n915 – Pope John X crowns Berengar I of Italy as Holy Roman Emperor (probable date).
Airline Deregulation Act The Airline Deregulation Act is a 1978 United States federal law that deregulated the airline industry in the United States, removing federal control over such areas as fares, routes, and market entry of new airlines. The Civil Aeronautics Board's powers of regulation were phased out, but the regulatory powers of the Federal Aviation Administration (FAA) were not diminished over all aspects of aviation safety.
Competition Competition is a rivalry where two or more parties strive for a common goal which cannot be shared: where one's gain is the other's loss (an example of which is a zero-sum game). Competition can arise between entities such as organisms, individuals, economic and social groups, etc.
Airline An airline is a company that provides air transport services for traveling passengers and freight. Airlines use aircraft to supply these services and may form partnerships or alliances with other airlines for codeshare agreements, in which they both offer and operate the same flight.
Airline hub An airline hub or hub airport is an airport used by one or more airlines to concentrate passenger traffic and flight operations. Hubs serve as transfer (or stop-over) points to help get passengers to their final destination.
List of airlines of Pakistan \n== Scheduled airlines ==
Airline reservations system Airline reservation systems (ARS) are systems that allow an airline to sell their inventory (seats). It contains information on schedules and fares and contains a database of reservations (or passenger name records) and of tickets issued (if applicable).
Regional airline A regional airline is a general classification of airline which typically operates scheduled passenger air service, using regional aircraft, between communities lacking sufficient demand or infrastructure to attract mainline flights. In North America, most regional airlines are classified as "fee-for-departure" carriers, operating their revenue flights as codeshare services contracted by one or more major airline partners.
Airline meal An airline meal, airline food, or in-flight meal is a meal served to passengers on board a commercial airliner. These meals are prepared by specialist airline catering services and normally served to passengers using an airline service trolley.
Surgery Surgery is a medical or dental specialty that uses operative manual and instrumental techniques on a person to investigate or treat a pathological condition such as a disease or injury, to help improve bodily function, appearance, or to repair unwanted ruptured areas.\nThe act of performing surgery may be called a surgical procedure, operation, or simply "surgery".
Significant figures Significant figures (also known as the significant digits, precision or resolution) of a number in positional notation are digits in the number that are reliable and necessary to indicate the quantity of something.\nIf a number expressing the result of a measurement (e.g., length, pressure, volume, or mass) has more digits than the number of digits allowed by the measurement resolution, then only as many digits as allowed by the measurement resolution are reliable, and so only these can be significant figures.
Significant other The term significant other (SO) has different uses in psychology and in colloquial language. Colloquially "significant other" is used as a gender-neutral term for a person's partner in an intimate relationship without disclosing or presuming anything about marital status, relationship status, gender identity, or sexual orientation.
Bit numbering In computing, bit numbering is the convention used to identify the bit positions in a binary number.\n\n\n== Bit significance and indexing ==\n\nIn computing, the least significant bit (LSB) is the bit position in a binary integer representing the binary 1s place of the integer.
Significant form Significant form refers to an aesthetic theory developed by English art critic Clive Bell which specified a set of criteria for what qualified as a work of art.
Statistical significance In statistical hypothesis testing, a result has statistical significance when it is very unlikely to have occurred given the null hypothesis. More precisely, a study's defined significance level, denoted by \n \n \n \n α\n \n \n {\displaystyle \alpha }\n , is the probability of the study rejecting the null hypothesis, given that the null hypothesis is true; and the p-value of a result, \n \n \n \n p\n \n \n {\displaystyle p}\n , is the probability of obtaining a result at least as extreme, given that the null hypothesis is true.
The Simpsons The Simpsons is an American animated sitcom created by Matt Groening for the Fox Broadcasting Company. The series is a satirical depiction of American life, epitomized by the Simpson family, which consists of Homer, Marge, Bart, Lisa, and Maggie.
Significant Mother Significant Mother is an American television sitcom created by Erin Cardillo and Richard Keith. Starring Josh Zuckerman, Nathaniel Buzolic and Krista Allen, it premiered on The CW network on August 3 and ended its run on October 5, 2015.
Internet In finance and economics, interest is payment from a borrower or deposit-taking financial institution to a lender or depositor of an amount above repayment of the principal sum (that is, the amount borrowed), at a particular rate. It is distinct from a fee which the borrower may pay the lender or some third party.
Competitor analysis Competitive analysis in marketing and strategic management is an assessment of the strengths and weaknesses of current and potential competitors. This analysis provides both an offensive and defensive strategic context to identify opportunities and threats.
Competitor backlinking Competitor backlinking is a search engine optimization strategy that involves analyzing the backlinks of competing websites within a vertical search. The outcome of this activity is designed to increase organic search engine rankings and to gain an understanding of the link building strategies used by business competitors.By analyzing the backlinks to competitor websites, it is possible to gain a benchmark on the number of links and the quality of links that is required for high search engine rankings.
Competitors for the Crown of Scotland When the crown of Scotland became vacant in September 1290 on the death of the seven-year-old child Queen Margaret, 13 claimants to the throne came forward. Those with the most credible claims were John Balliol, Robert Bruce, John Hastings and Floris V, Count of Holland.
Sport of athletics Athletics is a group of sporting events that involves competitive running, jumping, throwing, and walking. The most common types of athletics competitions are track and field, road running, cross country running, and racewalking.
List of female fitness and figure competitors This is a list of female fitness and figure competitors.\n\n\n== A ==\nJelena Abbou\n\n\n== B ==\nLauren Beckham\nAlexandra Béres\nSharon Bruneau\n\n\n== C ==\nNatalie Montgomery-Carroll\nJen Cassetty\nKim Chizevsky\nSusie Curry\n\n\n== D ==\nDebbie Dobbins\nNicole Duncan\n\n\n== E ==\nJamie Eason\nAlexis Ellis\n\n\n== F ==\nAmy Fadhli\nJaime Franklin\n\n\n== G ==\nAdela García \nConnie Garner\nElaine Goodlad\nTracey Greenwood\nOksana Grishina\n\n\n== H ==\nMallory Haldeman\nVanda Hădărean\nJen Hendershott\nSoleivi Hernandez\nApril Hunter\n\n\n== I ==\n\n\n== J ==\nTsianina Joelson\n\n\n== K ==\nAdria Montgomery-Klein\nAshley Kaltwasser\n\n\n== L ==\nLauren Lillo\nMary Elizabeth Lado\nTammie Leady\nJennifer Nicole Lee\nAmber Littlejohn\nJulie Lohre\nJenny Lynn\n\n\n== M ==\nTimea Majorová\nLinda Maxwell\nDavana Medina\nJodi Leigh Miller\nChisato Mishima\n\n\n== N ==\nKim Nielsen\n\n\n== O ==\n\n\n== P ==\nVicky Pratt\nElena Panova\nChristine Pomponio-Pate\nCathy Priest\n\n\n== Q ==\n\n\n== R ==\nMaite Richert\nCharlene Rink\nKelly Ryan\n\n\n== S ==\nErin Stern\nCarol Semple-Marzetta\nKrisztina Sereny\nTrish Stratus (Patricia Anne Stratigias)\n\n\n== T ==\nKristi Tauti\nJennifer Thomas\n\n\n== U ==\n\n\n== V ==\nLisa Marie Varon\n\n\n== W ==\nLatisha Wilder\nTorrie Wilson\nLyen Wong\nJenny Worth\nNicole Wilkins\n\n\n== Y ==\n\n\n== Z ==\nMarietta Žigalová\nMalika Zitouni\n\n\n== See also ==\nList of female bodybuilders\n\n\n== References ==\nThere has been a rise in the number of women wanting to compete as fitness models.
List of Dancing with the Stars (American TV series) competitors Dancing with the Stars is an American reality television show in which celebrity contestants and professional dance partners compete to be the best dancers, as determined by the show's judges and public voting. The series first broadcast in 2005, and thirty complete seasons have aired on ABC. During each season, competitors are progressively eliminated on the basis of public voting and scores received from the judges until only a few contestants remain.
Round-robin tournament A round-robin tournament (or all-play-all tournament) is a competition in which each contestant meets every other participant, usually in turn. A round-robin contrasts with an elimination tournament, in which participants are eliminated after a certain number of losses.
Arithmetic Arithmetic (from Ancient Greek ἀριθμός (arithmós) 'number', and τική [τέχνη] (tikḗ [tékhnē]) 'art, craft') is an elementary part of mathematics that consists of the study of the properties of the traditional operations on numbers—addition, subtraction, multiplication, division, exponentiation, and extraction of roots. In the 19th century, Italian mathematician Giuseppe Peano formalized arithmetic with his Peano axioms, which are highly important to the field of mathematical logic today.
Operation Mincemeat Operation Mincemeat was a successful British deception operation of the Second World War to disguise the 1943 Allied invasion of Sicily. Two members of British intelligence obtained the body of Glyndwr Michael, a tramp who died from eating rat poison, dressed him as an officer of the Royal Marines and placed personal items on him identifying him as the fictitious Captain (Acting Major) William Martin.
Operations management Operations management is an area of management concerned with designing and controlling the process of production and redesigning business operations in the production of goods or services. It involves the responsibility of ensuring that business operations are efficient in terms of using as few resources as needed and effective in meeting customer requirements.
Operations research Operations research (British English: operational research), often shortened to the initialism OR, is a discipline that deals with the development and application of advanced analytical methods to improve decision-making. It is sometimes considered to be a subfield of mathematical sciences.
Risk Factors
CONTINENTAL AIRLINES INC /DE/ ITEM 1A RISK FACTORS Risk Factors Relating to the Company We continue to experience significant losses
Since September 11, 2001, we have incurred significant losses
We reported a net loss of dlra68 million in 2005 and expect to incur a significant loss for the first quarter of 2006 under current market conditions
Losses of the magnitude incurred by us since September 11, 2001 are not sustainable if they continue
These losses are primarily attributable to decreased yields on passenger revenue since September 11, 2001 and record high fuel prices
Passenger revenue per available seat mile for our mainline operations was 5dtta8prca lower for the year ended December 31, 2005 versus 2000 (the last full year before the September 11, 2001 terrorist attacks)
We have been able to implement some fare increases on certain domestic and international routes during 2005, but these increases have not fully offset the substantial increase in fuel prices
Our ability to raise our fares is limited due to the substantial price competition in the airline industry, especially in US domestic markets
We cannot predict when or if yields will increase
Further, we cannot predict the long-term impact of any changes in fare structures, most importantly in relation to business fares, booking patterns, low-cost competitor growth, increased usage of regional jets, customers &apos directly booking on the internet, competitor bankruptcies and other changes in industry structure and conduct, but any of these factors could have a material adverse effect on our results of operations, financial condition or liquidity
Record high fuel costs have materially and adversely affected our operating results
Fuel costs, which are currently at historically high levels, constitute a significant portion of our operating expense
Mainline fuel costs represented approximately 26dtta7prca of our mainline operating expenses for the year ended December 31, 2005
We expect that fuel expense will be our single largest operating expense item in 2006
Based on gallons expected to be consumed in 2006, for every one dollar increase in the price of a barrel of crude oil, our annual fuel expense would increase by approximately dlra42 million
Our fuel expense could further increase if the refining margin (the component of the price of jet fuel attributable to the refining of crude oil into jet fuel) increases above current levels
We are also at risk for all of ExpressJetapstas fuel costs, as well as a margin on ExpressJetapstas fuel costs up to a negotiated cap of 71dtta2 cents per gallon, under our capacity purchase agreement and a related fuel purchase agreement with ExpressJet
Fuel prices and supplies are influenced significantly by international political and economic circumstances, such as increasing demand by developing nations, unrest in Iraq and current diplomatic tension between the US and Iran concerning Iranapstas nuclear energy development, as well as OPEC production curtailments, a disruption of oil imports, other conflicts or instability in the Middle East or other oil producing regions, environmental concerns, weather and other unpredictable events
Further, Hurricane Katrina and Hurricane Rita caused widespread disruption in 2005 to oil production, refinery operations and pipeline capacity in portions of the US Gulf Coast
As a result of these disruptions, the price of jet fuel increased significantly and the availability of jet fuel supplies was diminished
A significant portion of the increase in the price of jet fuel immediately following Hurricane Katrina and Hurricane Rita was attributable to an increase in the refining margin
Further increases in jet fuel prices or disruptions in fuel supplies, whether as a result of natural disasters or otherwise, could have a material adverse effect on our results of operations, financial condition or liquidity
From time to time we enter into petroleum swap contracts, petroleum call option contracts and/or jet fuel purchase commitments to provide some short-term hedge protection (generally three to six months) against sudden and significant increases in jet fuel prices
However, as of December 31, 2005, we did not have any fuel hedges in place
In February 2006, we entered into petroleum swap contracts to hedge a minimal portion of our projected 2006 fuel usage
Our high leverage may affect our ability to satisfy our significant financing needs or meet our obligations
As is the case with our principal competitors, we have a high proportion of debt compared to our equity capital
As of December 31, 2005, we had approximately dlra5dtta6 billion (including current maturities) of long-term debt and capital lease obligations, dlra226 million of stockholders &apos equity and dlra2dtta2 billion in consolidated cash, cash equivalents and short-term investments (of which dlra241 million was restricted cash)
Our combined long-term debt and capital lease obligations coming due in 2006 total dlra546 million, and we have significant amounts coming due in 2007 and thereafter
We also have significant operating lease and facility rental costs
For the year ended December 31, 2005, annual aircraft and facility rental expense under operating leases was dlra1dtta4 billion
In addition, we have substantial commitments for capital expenditures, including the acquisition of new aircraft and related spare engines
As of December 31, 2005, we had firm commitments for 52 new aircraft from Boeing, with an estimated cost of dlra2dtta5 billion, and options to purchase 30 additional Boeing aircraft
We are scheduled to take delivery of six new 737-800 aircraft in 2006, with delivery of the remaining 46 new Boeing aircraft occurring from 2007 through 2011
We have backstop financing for six 737-800 aircraft to be delivered in 2006 and two 777-200ER aircraft to be delivered in 2007
By virtue of these agreements, we have financing available for all Boeing aircraft scheduled to be delivered through 2007
However, we do not have backstop financing or any other financing currently in place for the remainder of the aircraft
Further financing will be needed to satisfy our capital commitments for our firm aircraft and other related capital expenditures
We can provide no assurance that sufficient financing will be available for the aircraft on order or other related capital expenditures, or for our capital expenditures in general
At December 31, 2005, our senior unsecured debt ratings were Caa2 by Moodyapstas and CCC+ by Standard & Poorapstas
Reductions in our credit ratings may increase the cost and reduce the availability of financing to us in the future
We do not have any debt obligations that would be accelerated as a result of a credit rating downgrade
However, we would have to post additional collateral of approximately dlra45 million under our bank-issued credit card processing agreement if our debt rating falls below Caa3 as rated by Moodyapstas or CCC- as rated by Standard & Poorapstas
We would also be required to post additional collateral of up to dlra27 million under our workers &apos compensation program if our debt rating falls below Caa2 as rated by Moodyapstas or CCC+ as rated by Standard & Poorapstas
Our bank-issued credit card processing agreement also contains financial covenants which require, among other things, that we maintain a minimum EBITDAR (generally, earnings before interest, taxes, depreciation, amortization, aircraft rentals and income from affiliates, adjusted for certain special items) to fixed charges (interest and aircraft rentals) ratio of 0dtta9 to 1dtta0 through June 30, 2006 and 1dtta1 to 1dtta0 thereafter
The liquidity covenant requires us to maintain a minimum level of dlra1dtta0 billion of unrestricted cash and short-term investments and a minimum ratio of unrestricted cash and short-term investments to current liabilities of
Although we are currently in compliance with all of the covenants, failure to maintain compliance would result in our being required to post up to an additional dlra330 million of cash collateral, which would adversely affect our liquidity
Depending on our unrestricted cash and short-term investments balance at the time, the posting of a significant amount of cash collateral could cause our unrestricted cash and short-term investments balance to fall below the dlra1dtta0 billion minimum balance requirement under our dlra350 million secured loan facility, resulting in a default under such facility
We have defined benefit pension plans covering substantially all US employees other than employees of Chelsea Food Services and CMI Based on current assumptions and applicable law, we will be required to contribute in excess of dlra1dtta5 billion to our defined benefit pension plans over the next ten years, including dlra258 million in 2006, to meet our minimum funding obligations
Our labor costs may not be competitive and could threaten our future liquidity
Labor costs constitute a significant percentage of our total operating costs
In 2005, labor costs (including employee incentives) constituted 23dtta6prca of our total operating expenses
All of the major hub-and-spoke carriers with whom we compete have achieved significant labor cost reductions, whether in or out of bankruptcy
Even given the effect of pay and benefit cost reductions we implemented beginning in April 2005, we believe that our wages, salaries and benefits cost per available seat mile, measured on a stage length adjusted basis ( &quote labor CASM &quote ), will continue to be higher than that of many of our competitors
Although we enjoy generally good relations with our employees, we can provide no assurance that we will not experience labor disruptions in the future
Any disruptions which result in a prolonged significant reduction in flights would have a material adverse impact on our results of operations or financial condition
Our net operating loss carryforwards may be limited
At December 31, 2005, we had estimated net operating loss carryforwards ( &quote NOLs &quote ) of dlra4dtta1 billion for federal income tax purposes that will expire beginning in 2006 through 2025
If we were to have a change of ownership under current conditions, our annual NOL utilization could be limited to approximately dlra81 million per year, before consideration of any built-in gains
For a further discussion of our NOLs, see Note 11 to our consolidated financial statements included in Item 8
For financial reporting purposes, income tax benefits recorded on losses generally result in deferred tax assets
We are required to provide a valuation allowance for deferred tax assets to the extent management determines that it is more likely than not that such deferred tax assets will ultimately not be realized
Due to our continued losses, we were required to provide a valuation allowance on deferred tax assets beginning in the first quarter of 2004
As a result, all of our 2005 losses and the majority of our 2004 losses were not reduced by any tax benefit
Furthermore, we expect to be required to provide additional valuation allowances in conjunction with deferred tax assets recorded on losses in the future
Risk Factors Relating to the Airline Industry Additional terrorist attacks or international hostilities may further adversely affect our financial condition, results of operations and liquidity
The terrorist attacks of September 11, 2001 involving commercial aircraft severely and adversely affected our financial condition, results of operations and liquidity and the airline industry generally
Additional terrorist attacks, even if not made directly on the airline industry, or the fear of such attacks (including elevated national threat warnings or selective cancellation or redirection of flights due to terror threats), could negatively affect us and the airline industry
The potential negative effects include increased security, insurance and other costs for us, higher ticket refunds and decreased ticket sales
The war in Iraq further decreased demand for air travel during the first half of 2003, especially in transatlantic markets, and additional international hostilities could potentially have a material adverse impact on our financial condition, results of operations or liquidity
Our financial resources might not be sufficient to absorb the adverse effects of any further terrorist attacks or other international hostilities involving the United States
The airline industry is highly competitive and susceptible to price discounting
The US airline industry is increasingly characterized by substantial price competition, especially in domestic markets
Carriers use discount fares to stimulate traffic during periods of slack demand, to generate cash flow and to increase market share
Some of our competitors have substantially greater financial resources, including hedges against fuel price increases, or lower cost structures than we do, or both
In recent years, the domestic market share held by low cost carriers has increased significantly and is expected to continue to increase, which is dramatically changing the airline industry
The increased market presence of low cost carriers, which engage in substantial price discounting, has diminished the ability of the network carriers to maintain sufficient pricing structures in domestic markets to achieve profitability
This has contributed to the dramatic losses for us and the airline industry generally
For example, a low-cost carrier began to directly compete with us on flights between Liberty International and destinations in Florida in 2005
We are responding vigorously to this challenge, but have experienced decreased yields on affected flights
We cannot predict whether or for how long these trends will continue
In addition to price competition, airlines also compete for market share by increasing the size of their route system and the number of markets they serve
Several of our domestic competitors have announced aggressive plans to expand into international markets, including some destinations that we currently serve
The increased competition in these international markets, particularly to the extent our competitors engage in price discounting, may have a material adverse effect on our results of operations, financial condition or liquidity
Airline profit levels are highly sensitive to changes in fuel costs, fare levels and passenger demand
Passenger demand and fare levels are influenced by, among other things, the state of the global economy, domestic and international events, airline capacity and pricing actions taken by carriers
The September 11, 2001 terrorist attacks, the weak economy prior to 2004, turbulent international events (including the war in Iraq), high fuel prices and extensive price discounting by carriers have resulted in dramatic losses for us and the airline industry generally and have precipitated several airline bankruptcies
United, US Airways, Delta, Northwest and several small competitors have filed for bankruptcy protection
Other carriers could file for bankruptcy or threaten to do so to reduce their costs
US Airways and, more recently, United, have emerged from bankruptcy
Carriers operating under bankruptcy protection may be in a position to operate in a manner adverse to us and could emerge from bankruptcy as more vigorous competitors with substantially lower costs than ours
Since its deregulation in 1978, the US airline industry has undergone substantial consolidation and may experience additional consolidation in the future
We routinely monitor changes in the competitive landscape and engage in analysis and discussions regarding our strategic position, including alliances, asset acquisitions and business combination transactions
We have had, and expect to continue to have, discussions with third parties regarding strategic alternatives
The impact of any consolidation within the US airline industry cannot be predicted at this time
Additional security requirements may increase our costs and decrease our traffic
Since September 11, 2001, the Department of Homeland Security ( &quote DHS &quote ) and TSA have implemented numerous security measures that affect airline operations and costs, and are likely to implement additional measures in the future
Most recently, DHS has begun to implement the US-VISIT program (a program of fingerprinting and photographing foreign visa holders), announced that it will implement greater use of passenger data for evaluating security measures to be taken with respect to individual passengers, expanded the use of federal air marshals on our flights (thus displacing additional revenue passengers and causing increased customer complaints from displaced passengers), begun investigating a requirement to install aircraft security systems (such as active devices on commercial aircraft as countermeasures against portable surface to air missiles) and expanded cargo and baggage screening
DHS has also req uired certain flights to be cancelled on short notice for security reasons, and has required certain airports to remain at higher security levels than other locations
In addition, foreign governments also have begun to institute additional security measures at foreign airports we serve, out of their own security concerns or in response to security measures imposed by the US A large part of the costs of these security measures is borne by the airlines and their passengers, and we believe that these and other security measures have the effect of decreasing the demand for air travel and the attractiveness of air transportation as compared to other modes of transportation in general
Security measures imposed by the US and foreign governments after September 11, 2001 have increased our costs and therefore adversely affected our financial results, and additional measures taken in the future may result in similar adverse effects
See &quote Industry Regulation and Airport Access - Federal Regulations &quote above for a discussion of passenger and aviation security fees and their impact on us
Expanded government regulation could further increase our operating costs and restrict our ability to conduct our business
As evidenced by the security measures discussed above, airlines are subject to extensive regulatory and legal compliance requirements that result in significant costs
Additional laws, regulations, taxes and airport rates and charges have been proposed from time to time that could significantly increase the cost of airline operations or reduce revenue
The FAA from time to time issues directives and other regulations relating to the maintenance and operation of aircraft that require significant expenditures
Some FAA requirements cover, among other things, retirement of older aircraft, security measures, collision avoidance systems, airborne windshear avoidance systems, noise abatement and other environmental concerns, commuter aircraft safety and increased inspections and maintenance procedures to be conducted on older aircraft
We expect to continue incurring ex penses to comply with the FAAapstas regulations
Many aspects of airlines &apos operations also are subject to increasingly stringent federal, state and local laws protecting the environment
Future regulatory developments in the US and abroad could adversely affect operations and increase operating costs in the airline industry
For example, potential future actions that may be taken by the US government, foreign governments, or the International Civil Aviation Organization to limit the emission of greenhouse gases by the aviation sector are unknown at this time, but the impact to us and our industry is likely to be adverse and could be significant
Restrictions on the ownership and transfer of airline routes and takeoff and landing slots have also been proposed
The ability of US carriers to operate international routes is subject to change because the applicable arrangements between the United States and foreign governments may be amended from time to time, or because appropriate slots or facilities are not made available
We cannot provide assurance that current laws and regulations, or laws or regulations enacted in the future, will not adversely affect us
Our results of operations fluctuate due to seasonality and other factors associated with the airline industry
Due to greater demand for air travel during the summer months, revenue in the airline industry in the second and third quarters of the year is generally stronger than revenue in the first and fourth quarters of the year for most US air carriers
Our results of operations generally reflect this seasonality, but also have been impacted by numerous other factors that are not necessarily seasonal, including excise and similar taxes, weather, air traffic control delays and general economic conditions, as well as the other factors discussed above
For example, in the third quarter of 2005, Hurricanes Katrina and Rita disrupted our operations and resulted in unprecedented high prices and diminished supplies of jet fuel
As a result, our operating results for a quarterly period are not necessarily indicative of operating results for an entire year, and historical operating results are not necessarily indicative of future operating results