U.S. GAO Report on Aviation Safety Says Better Data and Targeted FAA Efforts Needed to Identify and Address Safety Issues of Small Air Cargo Carriers

June 25, 2009 at 6:35 pm

(Source: U.S. GAO)

Image Courtesy: GAO

The air cargo industry contributed over $37 billion to the U.S. economy in 2008 and provides government, businesses, and individuals with quick delivery of goods. Although part of an aviation system with an extraordinary safety record, there have been over 400 air cargo accidents and over 900 incidents since 1997, raising concerns about cargo safety.

GAO’s congressionally requested study addresses:

(1) recent trends in air cargo safety,

2) factors that have contributed to air cargo accidents,

(3) federal government and industry efforts to improve air cargo safety and experts’ views on the effectiveness of these efforts, and

(4) experts’ views on further improving air cargo safety.

To perform the study, GAO analyzed agency data, surveyed a panel of experts, reviewed industry and government documents, and interviewed industry and government officials. GAO also conducted site visits to Alaska, Ohio, and Texas.

From 1997 through 2008, 443 accidents involving cargo-only carriers occurred, including 93 fatal accidents. Total accidents declined 63 percent from a high of 62 in 1997 to 23 in 2008. Small cargo carriers were involved in the vast majority of the accidents–79 percent of all accidents and 96 percent of fatal accidents. Although accident rates for large cargo carriers fluctuated during this period, they were comparable to accident rates for large passenger carriers in 2007.

GAO could not calculate accident rates based on operations or miles traveled for small carriers because the Federal Aviation Administration (FAA) does not collect the necessary data. Although several factors contributed to these air cargo accidents, our review of National Transportation Safety Board (NTSB) data found that pilot performance was identified as a probable cause for about 80 percent of fatal and about 53 percent of non-fatal cargo accidents.

Furthermore, GAO’s analysis of NTSB reports for the 93 fatal accidents, using an FAA flight-risk checklist, identified three or more risk factors in 63 of the accidents. Risk factors included low pilot experience, winter weather, and nighttime operations. Alaska’s challenging operating conditions and remotely located populations who rely on air cargo are also a contributing factor. Many federal efforts to improve air cargo safety focus on large carriers.

Air cargo experts that GAO surveyed ranked FAA’s voluntary disclosure programs–in which participating carriers voluntarily disclose safety events to FAA–as the most effective effort to improve air cargo, but two of the three main voluntary disclosure programs are used typically by large carriers. Several industry initiatives, however, focus on carriers with smaller aircraft, such as the Medallion Foundation, which has improved small aircraft safety in Alaska through training and safety audits.

The two actions experts cited most often to further improve air cargo safety were installing better technology on cargo aircraft to provide additional tools to pilots and collecting data to track small cargo carrier operations. Using flight risk checklists can also help pilots assess the accumulated risk factors associated with some cargo flights.

Recommendations:

  • To help FAA improve the data on and the safety of air cargo operations, the Secretary of Transportation should direct the FAA Administrator to gather comprehensive and accurate data on all part 135 cargo operations to gain a better understanding of air cargo accident rates and better target safety initiatives. This can be done by separating out cargo activity in FAA’s annual survey of aircraft owners or by requiring all part 135 cargo carriers to report operational data as part 121 carriers currently do.
  • To help FAA improve the data on and the safety of air cargo operations, the Secretary of Transportation should direct the FAA Administrator to promote the increased use of safety programs by small (feeder and ad hoc) cargo carriers that use the principles underpinning SMS and voluntary self-disclosure programs.
  • To help FAA improve the data on and the safety of air cargo operations, the Secretary of Transportation should direct the FAA Administrator to evaluate the likelihood that cargo incidents could be precursors to accidents and, if FAA determines they are, create a process for capturing incidents that would allow in-depth analysis of incidents to identify accident precursors related to specific carriers, locations, operations, and equipment.
  • To help FAA improve the data on and the safety of air cargo operations, the Secretary of Transportation should direct the FAA Administrator to create incentives for cargo carriers to use flight risk assessment checklists in their daily operations, including tailoring a sample flight risk assessment checklist for part 135 cargo carriers.

Click here to read/download the entire report (60 Pages).

Australia calls for aviation to be part of climate change treaty

June 17, 2009 at 11:25 pm

(Source: WorldChanging & Times of India)

Proposal brings worldwide carbon tax for airline passengers closer

The prospect of a worldwide carbon tax for airline passengers is gathering pace after the Australian government demanded the inclusion of the aviation industry in the global climate change treaty.

The Australian administration has proposed that airlines are set a carbon dioxide reduction target as part of the treaty that will emerge from the Copenhagen summit this year. The latest plan would see responsibility for any aviation deal handed over to the UN Framework Convention on Climate Change, which is overseeing the treaty talks.

The proposal is one of four suggestions for dealing with aviation emissions that will be discussed in Copenhagen. If the Australian plan is accepted, it is likely that airlines will join a global emissions trading scheme. British Airways backed a global scheme last week and its chief executive, Willie Walsh, said it would force up fares as airlines pass on the multibillion-dollar cost of acquiring carbon credits.

Also on June 9, 2009, according to Times of India,  some of the world’s largest airlines called for the industry to set global emissions targets as part of efforts to include aviation in a broader climate agreement at the end of the year.  The seven airlines, including Air France/KLM and British Airways, along with international NGO The Climate Group, have backed a range of emissions reduction targets for negotiators involved in UN-backed climate talks to consider.

The proposals, from carbon-neutral growth, a 5 percent reduction and a 20 percent reduction in emissions through to 2020, using a 2005 base-year, will be presented to negotiators at the latest round of climate talks being held this week in Bonn, Germany.

The carriers, part of the Aviation Global Deal Group, said in a statement that participation in an international carbon trading market would be crucial to meeting their goals.

Under the group’s proposal, a proportion of the sector’s emission allowances would be auctioned to generate revenues for climate change initiatives in developing countries.

“Based on the scenarios assessed, auction revenues of up to $5 billion per annum could be generated to support activities such as climate adaptation programmes and initiatives to combat tropical deforestation,” the group said in the statement.

The group also proposed that airlines’ carbon dioxide (CO2) emissions are based on the carbon content of their annual fuel purchases and that CO2 pollution should be addressed through a global sectoral agreement, rather than a patchwork of regional schemes.

Environmental campaigners welcomed the Australian proposal. Joss Garman, of Greenpeace, said: “Scientists project that unless world leaders take action, ships and planes would eat up 50% to 80% of the world’s carbon budget by 2050, making it essential that governments end these industries’ special treatment and include them in a strong Copenhagen treaty.”

Click here to read the entire article report.

GAO Report on Aviation and Climate Change Says Aircraft Emissions Expected to Grow, but Technological and Operational Improvements and Government Policies Can Help Control Emissions

June 13, 2009 at 10:05 am

(Source:  Government Accountability Office)

Aircraft emit greenhouse gases and other emissions, contributing to increasing concentrations of such gases in the atmosphere. Many scientists and the Intergovernmental Panel on Climate Change (IPCC)–a United Nations organization that assesses scientific, technical, and economic information on climate change–believe these gases may negatively affect the earth’s climate. Given forecasts of growth in aviation emissions, some governments are taking steps to reduce emissions.

In response to a congressional request, GAO reviewed:

(1) estimates of aviation’s current and future contribution to greenhouse gas and other emissions that may affect climate change;

(2) existing and potential technological and operational improvements that can reduce aircraft emissions; and

(3) policy options for governments to help address commercial aircraft emissions.

GAO conducted a literature review; interviewed representatives of government agencies, industry and environmental organizations, airlines, and manufacturers, and interviewed and surveyed 18 experts in economics and aviation on improvements for reducing emissions from aircraft. GAO is not making recommendations. Relevant agencies provided technical comments which we incorporated as appropriate and EPA said emissions standards can have a positive benefit to cost ratio and be an important part of policy options to control emissions.

According to IPCC, aviation currently accounts for about 2 percent of human-generated global carbon dioxide emissions, the most significant greenhouse gas–and about 3 percent of the potential warming effect of global emissions that can affect the earth’s climate, including carbon dioxide. IPCC’s medium-range estimate forecasts that by 2050 the global aviation industry, including aircraft emissions, will emit about 3 percent of global carbon dioxide emissions and about 5 percent of the potential warming effect of all global human-generated emissions. Gross domestic product growth is the primary driver in IPCC’s forecasts. IPCC also made other assumptions about future aircraft fuel efficiency, improvements in air traffic management, and airport and runway capacity. IPCC’s 2050 forecasts for aviation’s contribution to global emissions assumed that emissions from other sectors will continue to grow.

If other sectors make progress in reducing emissions and aviation emissions continue to grow, aviation’s relative contribution may be greater than IPCC estimated; on the other hand, if other sectors do not make progress, aviation’s relative contribution may be smaller than estimated. While airlines currently rely on a range of improvements, such as fuel-efficient engines, to reduce emissions, some of which may have limited potential to generate future reductions, experts we surveyed expect a number of additional technological, operational, and alternative fuel improvements to help reduce aircraft emissions in the future. However, according to experts we interviewed, some technologies, such as advanced airframes, have potential, but may be years away from being available, and developing and adopting them is likely to be costly.

In addition, according to some experts we interviewed, incentives for industry to research and adopt low-emissions technologies will be dependent to some extent on the level and stability of fuel prices. Finally, given expected growth of commercial aviation as forecasted by IPCC, even if many of these improvements are adopted, it appears unlikely they would greatly reduce emissions by 2050. A number of policy options to address aircraft emissions are available to governments and can be part of broader policies to address emissions from many sources including aircraft. Market-based measures can establish a price for emissions and provide incentives to airlines and consumers to reduce emissions. These measures can be preferable to other options because they would generally be more economically efficient. Such measures include a cap-and-trade program, in which government places a limit on emissions from regulated sources, provides them with allowances for emissions, and establishes a market for them to trade emissions allowances with one another, and a tax on emissions. Governments can establish emissions standards for aircraft or engines. In addition, government could increase government research and development to encourage development of low-emissions improvements.

Click here to download the entire report.

“Greener Aviation” Technologies and Alternative Fuels Head AIAA List of Top 10 Emerging Aerospace Technologies

June 10, 2009 at 12:43 pm

(Source: Green Car Congress)

Image: via Apture

Off late, there is a big push within the Aviation industry towards a “greener future.”   More airlines are starting to test technologies and tweak approaches (such as use of biofuels) to attract the environmentally-conscious consumer. According to 700-page Stern Report on the economics of climate change, CO2 emissions from aviation are about 600-700 megatonnes per year, or about 2-3% of total global CO2 emissions.   Giovanni Bisignani, IATA’s Director General and CEO, in his State of the Industry address at the 65th IATA Annual General Meeting and World Air Transport Summit in Kuala Lumpur said the international airline industry is committed to achieving carbon-neutral growth by 2020.

Amdist all the buzz and fervor building up around the greening of aviation, the American Institute of Aeronautics and Astronautics (AIAA),  the world’s largest technical society dedicated to the global aerospace profession, with more than 35,000 individual members worldwide, and 90 corporate members, has released its first annual list of top emerging aerospace technologies.  Developed by AIAA’s Emerging Technologies Committee (ETC), the 2009 list comprises the following:

  1. “Greener Aviation” Technologies, including emission reduction and noise reduction technologies as usedin the Federal Aviation Administration’s Continuous Low Emissions, Energy and Noise (CLEEN) program, and the European Environmentally Friendly Engine (EFE) program and “Clean Sky” Joint Technology Initiative.
  2. Alternative Fuels, including biofuels, as promoted by the FAA’s Commercial Aviation Alternative Fuels Initiative (CAAFI), and the recent FAA grant to the X Prize Foundation to spur development of renewable aviation fuels and technologies.
  3. High Speed Flight Technologies, such as supersonic and hypersonic aerodynamics, sonic boom reduction technology, and thermal management aids.
  4. Efficient Propulsion Technologies, including open rotors and geared turbofans, such as those used in the European DREAM (valiDation Radical Engine Architecture systeMs) program.
  5. Active Flow Technologies, such as plasma actuators.
  6. Advanced Materials, such as nanotechnology and composites.
  7. Active Structures, such as shape memory alloys, morphing, and flapping.
  8. Health Management, such as monitoring, prognostics, and self-healing.
  9. Remote Sensing Technologies, including unmanned aerial vehicles and satellites such as those used inNASA’s Global Earth Observation System of Systems (GEOSS) program.
  10. Advanced Space Propulsion Technologies, including plasma-based propulsion such as the Variable Specific Impulse Magnetoplasma Rocket, and solar sail technologies.

AIAA’s list reflects the expertise of the members of the Emerging Technologies Committee, as well as the results of a specially commissioned study. The ETC is composed of three technical subcommittees: Aviation, Space, and Multidisciplinary and System Technologies.  ETC chair Dan Jensen stated, “The list provides guidance to AIAA for its institute development strategy, while helping shape the annual input AIAA provides to the United States Air Force Scientific Advisory Board. The technologies listed represent the aerospace technologies in which research and technology development is most active from a global perspective.”

Airline Industry Targeting Carbon-Neutral Growth By 2020

June 8, 2009 at 2:13 pm

(Source: Business Standard & Green Car Congress)

Image: REUTERS/Zainal Abd Halim via Boston Globe

The international airline industry is committed to achieving carbon-neutral growth by 2020, said Giovanni Bisignani, IATA’s Director General and CEO in his State of the Industry address at the 65th IATA Annual General Meeting and World Air Transport Summit in Kuala Lumpur.

Two years ago we set a vision to achieve carbon-neutral growth on the way to a carbon-free future. Today we have taken a major step forward by committing to a global cap on our emissions in 2020. After this date, aviation’s emissions will not grow even as demand increases. Airlines are the first global industry to make such a bold commitment.

—Giovanni Bisignani

The commitment to carbon-neutral growth completes a set of three sequential goals for air transport: (1) a 1.5% average annual improvement in fuel efficiency from 2009 to 2020; (2) carbon-neutral growth from 2020 and (3) a 50% absolute reduction in carbon emissions by 2050.

To achieve these goals, the air transport industry is focusing on a cross-industry four-pillar strategy on climate change consisting of improved technology; effective operations; efficient infrastructure; and positive economic measures.

In 2009 the carbon footprint of air transport is expected to shrink by 7%. Of this, 5% is due to the recession and 2% is directly related to efficiency gains.

Bisignani said a cross industry four-pillar strategy on climate change focused on improved technology, effective operations, efficient infrastructure and positive economic measures was delivering results noting that in 2009 the carbon footprint of air transport was expected to shrink by 7 per cent.

Bisignani attributed 5 per cent to the recession and 2 per cent to efficiency gains from IATA’s four-pillar strategy.

“No other industry is as united and no other industry can point to such good results and progress,” Bisignani claimed.  He noted that the airlines’ commitment needed to be matched by governments. “We are ambitious, but our success will be contingent on governments acting effectively.”

“International Civil Aviation Organisation (ICAO) must set binding carbon emissions standards on manufacturers for new aircraft. A legal and fiscal framework to support the availability of sustainable biofuels must be established.

“Governments must work with air navigation service providers to push forward major infrastructure projects such as a Single European Sky, NextGen in the US or fixing the Pearl River Delta in China,” Bisignani added.

Airline losses worldwide may total $9 billion in 2009, nearly double a previous forecast

June 8, 2009 at 10:33 am

(Source:  Time)

The International Air Transport Association (IATA), which represents 230 airlines worldwide, increased its loss estimate from the $4.7 billion it forecast in March, reflecting a “rapidly deteriorating revenue environment.”

Although there has been growing signs of a bottoming out of the recession, IATA said the industry was severely hit in the first quarter with 50 major airlines reporting losses of more than $3 billion. Weak consumer confidence, high business inventories and rising oil prices pose headwinds for future recovery, the association said during a two-day global aviation conference in Kuala Lumpur.

Revenues are expected to decline by $80 billion — an unprecedented 15% from a year ago — to $448 billion this year, and the weakness will persist into 2010, it said.

“There is no modern precedent for today’s economic meltdown. The ground has shifted. Our industry has been shaken. This is the most difficult situation that the industry has faced,” said IATA Chief Executive Giovanni Bisignani. The Geneva-based association also revised its estimated loss for last year to $10.4 billion from $8.5 billion previously.

It said passenger traffic for 2009 is expected to contract by 8% from a year ago to 2.06 billion travelers. Cargo demand will decline by 17% and some 100,000 jobs worldwide are at risk, it said.

The association expects the industry fuel bill to shrink by $59 billion, or 36%, to $106 billion this year, accounting for 23% of operating costs with an average oil price of $56 a barrel. But crude oil prices have rallied in recent weeks, breaching the $70 a barrel level on Friday on hopes of economic recovery.

IATA said carriers in all regions were expected to report losses, with Asia-Pacific to be the hardest hit amid a sharp slowdown in its three key markets — Japan, China and India. The region’s carriers are expected to post losses of $3.3 billion, worse than the previous forecast of $1.7 billion but better than the $3.9 billion losses last year.

North American carriers are expected to lose $1 billion, far better than its $5.1 billion losses in 2008, thanks to early capacity cuts and limited hedging by U.S. airlines.

Click here to read the entire article.

Event Alert: 81st Annial AAAE Conference and Exposition — Jule 14-17 @ Philadelphia, PA

June 8, 2009 at 9:30 am

The 81st Annual AAAE Conference and Exposition is scheduled for June 14-17, 2009, in Philadelphia, Pennsylvania.  This historic city will be our host for the best airport industry conference around.

The AAAE annual conference always attracts more than 2,500 airport and aviation professionals, including airport executives; airport and aviation suppliers and vendors; airline personnel, and representatives from FAA, TSA and DHS. Four days of discussions revolving around the current state of affairs of the airport industry will be supplemented by an exhibit hall with over 250 vendors ready to assist the industry in meeting its challenges with their products and services.  Don’t miss this once-a-year opportunity to meet with airport colleagues from around the country!

Tuesday, June 16, 10:30 a.m.
Fresh on the job after being sworn in June 1, 2009, U.S. Deputy Secretary of Transportation John Porcari will deliver his first address to an aviation industry group at the AAAE Annual Conference on Tuesday, June 16 at 10:30 am in Philadelphia, Pennsylvania.

PRE-REGISTRATION DEADLINE

All registrations received after Wednesday, June 10, 2009, will be considered on-site registrations and will be processed upon check-in during registration hours at the conference. Attendees who mail or fax in registrations and do not receive a faxed confirmation letter should bring a copy of their registration form and payment information with them. The May 15 deadline does not apply to listings in conference publications. Rosters will be printed and shipped several weeks in advance of the conference dates and cannot include listings for subsequent registrations. A final roster of attendees will be available after the conference concludes. For further information, contact Alexia Marquex at (703) 824-0500, Ext. 201, or e-mailalexia.marquez@aaae.org.

REGISTRATION/CANCELLATION POLICY
All registrations must be in writing. All cancellations must be received in writing on or before May 15 and will be refunded after the conference is over. Refund requests on or before May 15 are subject to a $150 processing fee; no-shows will be billed. There will be no refunds of any kind after May 15. This includes golf fees, spouse program and spouse tour fees.

Confirmation of registration will be e-mailed to conference attendees. If you have not received a confirmation letter via e-mail two business days prior to the meeting, and you enrolled at least 15 days prior to the meeting, please contact the AAAE Meetings Department at (703) 824-0504 or email aaaemeetings@aaae.org. Non-receipt of the confirmation letter before the meeting is notjustification for seeking a refund.

Attendee substitutions will be accepted. Photocopies of this form will be accepted. AAAE accepts registration regardless of race, religion, sex, physical disability and national or ethnic origin. This includes but is not limited to admissions, employment and educational services.

For more information about the event and other details, please visit the conference website:  https://www.aaae.org/meetings/annual2009/index.cfm

QANTAS’ economy airline seat beats 153 competitors (including a toilet cistern and a pair of socks) to win Australia’s top design award

May 29, 2009 at 6:41 pm

(Source: HeraldSun)

Image Courtesy: Australian International Design Awards

The Qantas A380 Economy Seat beat a pool of 154 entries to win the 2009 Australian International Design Award of the Year, announced in Melbourne tonight.

The seat was designed by Marc Newson, in partnership with Qantas Airways and Recaro Aircraft Seating. 

Mr Newson, an industrial designer and Qantas Creative Director, said he was honoured to receive the award. 

“An enormous amount of energy was put into the A380, but particularly the economy seat, which, of course, accommodates the bulk of passengers,” Mr Newson said.

Judges described the seat as a “world class result” in a notoriously restrictive design category. 

They praised the seat’s “revolutionary” footrest, the entertainment unit and the selection of materials, which included lightweight carbon fibre to help reduce weight. 

“There are so many thoroughly considered elements in one very simple and elegant package. This product cannot be faulted,” a statement from the judges said. 

The design award’s program director Stephanie Watson said the winning product was not selected until the last day of judging after a week of intense scrutiny. 

“The products were beyond exceptional and the competition was tough,” she said. 

Other finalists included Swiss-designed socks which keep your feet cool, a toilet cistern that can be hidden from view and a hearse which shows off the coffin.

Now pay $7.50 for printing your airline ticket at your own home! Another Ridiculous Fee From the World’s Cheapest Airline

May 18, 2009 at 11:25 pm

(Source: Wired & TimesOnline, UK)

The tightwads at Ryanair have found yet another fee to foist upon customers already nickeled and dimed to death.

The airline widely renowned for being the cheapest thing going says it will start charging passengers £5 ($7.50) for the privilege of printing their boarding passes at home. It’s the latest brilliant idea from the folks who earlier this year suggested charging passengers to use lavatories. What makes this idea so absurd is it replaces Ryanair’s previous practice of offering free online ticketing as an alternative to checking in at the ticket counter – which costs you £10. Leave it to Ryanair to sell the new fee as a way to save money.

Image: Gizmodo

“For some passengers, yes, the price has gone up,” spokesman Stephen McNamara told the Times of London. said. “But for those used to paying the £10 airport check-in fee, the price has actually gone down.”

Unless you can’t print out your boarding card. Or you lose it. Then you’re looking at a £40 fee.

The airline says anyone who doesn’t have a printer should get a friend to print the pass for them or go to an Internet cafe in order to avoid a £40 fee.

“Online check-in is the future,” McNamara said, according to the Times. “My mother doesn’t have a computer, but would a person without an ATM card have been allowed to hold up the automation of the banking system?”

Ryanair’s move comes as the European Union forces the airline to be more honest in disclosing some of the fees and taxes it slaps on every ticket. Many of them are impossible to avoid, but Ryanair doesn’t make that clear when advertising its super-cheap fares. The Independent notes Ryanair will tack a £10 fee onto its “free” tickets if they’re purchased with normal credit or debit cards, but it doesn’t disclose that charge in the initial price. Combine that with other stealth fees and your free Ryanair flight can end up costing as much as £80 ($120).

According to the EU, the days of the £1 flight that ends up costing £59.99 after the taxes, fees, check-in and baggage charges are over — for half the airlines identified, anyway — and the opt-in boxes for extras such as insurance and priority boarding are no longer ready-ticked. In theory, consumers should see all taxes, fees and other compulsory charges at the beginning of the booking process and not on the bottom line.

“It is unacceptable that one in three consumers going to book a plane ticket online is being ripped off, misled or confused,” said the EU’s commissioner, for consumer protection, Meglena Kuneva. “There are serious and persistent problems with ticket sales throughout the airline industry as a whole. My message to industry is clear: act now or we will act.”

Love is in the air, literally! – Air New Zealand launches matchmaking flights

May 18, 2009 at 10:28 pm

(Source: Wired & The New Zealand Herald)

Love is in the air — Air New Zealand, that is. The Kiwi carrier has launched Matchmaking Flight to bring lonely travelers together. After all, what better way to get to know The One than sharing a 13-hour flight on your first date?

If you aren’t up for a blind date, you can try meeting that special someone on the airline’s Matchmaking Flight website, a social networking where passenger can meet and interact in the safety of cyberspace before meeting at the terminal. That could keep you from getting matched with that sketchy guy in Seat 35B who keeps mentioning the mile-high club.

In a new venture, coined “love at first flight”, the airline says it is aiming to help single Americans find New Zealand dates with a themed flight headed for a dual hemisphere singles party.

It’s almost a given that the first flight will depart from Los Angeles International Airport on Oct. 13. The journey of love, which is an enticing overnight flight, begins with a pre-flight party at the Air New Zealand Lounge. What happens next is up to you. Upon landing, passengers will dance away their jet lag at the Grand Matchmaking Ball at Auckland’s SkyCity Grand hotel. The whole package starts at $780 per person.

Register on the website and you can look for love in categories that include American boyfriend, Canadian girlfriend, Kiwi friend, and, our favorite, “business contact. The airline says 75 people have signed up. They’re about evenly split between North Americans and Kiwis. Men and women are also equally represented. Air New Zealand hopes passengers will be in a romantic mood just thinking about their destination.