96-588: PLUNA Líneas Aéreas Uruguayas S.A. was the flag carrier of Uruguay . It was headquartered in Carrasco, Montevideo and operated scheduled services within South America , as well as scheduled cargo and charter services from its hub at Carrasco International Airport . On 5 July 2012, only two days after the carrier's employees went on strike amid mounting financial difficulties, the Uruguayan government decided to close
192-624: A public company or a state-owned enterprise , while others have been completely privatized . The aviation industry has also been gradually deregulated and liberalized, permitting greater freedoms of the air particularly in the United States and in the European Union with the signing of the Open Skies agreement. One of the features of such agreements is the right of a country to designate multiple airlines to serve international routes with
288-751: A Uruguayan court concluded that no Leadgate executives were responsible for Pluna's collapse. Two years later, in 2018 a Panamanian-based investment consortium named Caballero Verde S. de R.L. took ownership of LARAH, which still owned 75% of Pluna's shares. The consortium plans to seek compensation from the Uruguayan government for Pluna's demise. As of April 2011, PLUNA linked Uruguay with two destinations in Argentina, one in Chile, one in Paraguay, and eight in Brazil. The following
384-634: A VIP aircraft by the Mexican Air Force for 23 years under registration TP-03. TP-03 would be broken up in 2006. The first 737-100, NASA 515, is on static display in the Museum of Flight in Seattle and is the last surviving example of the type. The 737-200 was a 737-100 with an extended fuselage, launched by an order from United Airlines in 1965 and entered service with the launch customer in April 1968. Its unit cost
480-783: A certificate under Section 401 of the Federal Aviation Act of 1958 (i.e., any U.S.-based airline operating internationally), and any ship registered in the United States is known as a U.S. flag vessel . The term "flag carrier" is a legacy of the early days of commercial aviation when governments often took the lead by establishing state-owned airlines because of the high capital costs of running them. However, not all such airlines were government-owned; Pan Am , TWA , Cathay Pacific , Union de Transports Aériens , Canadian Pacific Air Lines and Olympic Airlines were all privately owned, but were considered to be flag carriers as they were
576-458: A design team, which cooperated with CFM International to select, modify and deploy a new engine and nacelle that would make the 737-300 into a viable aircraft. They chose the CFM56-3B-1 high-bypass turbofan engine to power the aircraft, which yielded significant gains in fuel economy and a reduction in noise, but also posed an engineering challenge, given the low ground clearance of the 737 and
672-448: A given sovereign state , enjoys preferential rights or privileges accorded by the government for international operations. Historically, the term was used to refer to airlines owned by the government of their home country and associated with the national identity of that country. Such an airline may also be known as a national airline or a national carrier , although this can have different legal meanings in some countries. Today, it
768-518: A gravel deflector on the nose gear and a vortex dissipator extending from the front of the engine. Alaska Airlines used the gravel kit for some of its combi aircraft rural operations in Alaska until retiring its -200 fleet in 2007. Air Inuit , Nolinor Aviation and Chrono Aviation still use the gravel kit in Northern Canada. Canadian North also operated a gravel-kitted 737-200 Combi, but this
864-423: A need for a new aircraft to supplement the 727 on short and thin routes. Preliminary design work began on May 11, 1964, based on research that indicated a market for a fifty to sixty passenger airliner flying routes of 50 to 1,000 miles (100 to 1,600 km). The initial concept featured podded engines on the aft fuselage, a T-tail as with the 727, and five-abreast seating. Engineer Joe Sutter relocated
960-456: A new Boeing aircraft. Lufthansa was the only significant customer to purchase the 737-100 and only 30 aircraft were produced. The -200 was rolled out on June 29, 1967, and had its maiden flight on August 8, 1967. It was then certified by the FAA on December 21, 1967. The inaugural flight for United Airlines took place on April 28, 1968, from Chicago to Grand Rapids, Michigan . The lengthened -200
1056-512: A participation of 75% into PLUNA at that time; the Government of Uruguay held the balance. In September and October 2010, three additional new CRJ900s aircraft were delivered from the Bombardier factory. In April 2011, three options were taken up for delivery at the end of 2011 and these were delivered between September and November 2011. With these additions, PLUNA's fleet consisted of 13 airplanes,
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#17328721212981152-502: A range similar to the Airbus A319LR . The 737-800 was a stretched version of the 737-700 launched on September 5, 1994. The -800 seats 162 passengers in a two-class or 189 passengers in a high-density, one-class layout. Launch customer Hapag-Lloyd Flug (now TUIfly ) received the first one in April 1998. The -800 replaced directly the -400 and aging 727-200 of US airlines. It filled also the gap left by Boeing's decision to discontinue
1248-416: A retrofit was provided for active aircraft. Longer nacelle/wing fairings were introduced, and the airflow over the flaps and slats was improved. The production line also introduced an improvement to the flap system, allowing increased use during takeoff and landing. All these changes gave the aircraft a boost to payload and range, and improved short-field performance. Both the first and last 737-100s became
1344-485: A single-class layout with slimline seats requiring an extra pair of exit doors . The MAX 200 would be 20% more cost-efficient per seat, including 5% lower operating costs than the MAX 8 and would be the most efficient narrow-body on the market when entering service. In mid-November 2018, the first MAX 200 of the 135 ordered by Ryanair rolled out, in a 197-seat configuration. It was first flown from Renton on January 13, 2019, and
1440-495: A strengthened wing spar . The -400s first flight was on February 19, 1988, and, after a seven-month/500-hour flight-testing run, entered service with Piedmont Airlines that October. The last two -400s, i.e. the last 737 Classics series, were delivered to CSA Czech Airlines on February 28, 2000. The 737-400 was replaced by the 737-800 of the Next Generation series. The 737-400SF was a 737-400 converted to freighter, though it
1536-428: A two class and 189 in a high-density, one class layout. The launch customer Alaska Airlines received the delivery on May 15, 2001. The 737-900ER (Extended Range) is the newest and largest variant of the 737NG generation. An additional pair of exit doors and a flat rear pressure bulkhead increased its seating capacity to 180 passengers in a two-class and up to 220 passengers in a one-class configuration. The -900ER
1632-695: Is a list of destinations that were served by PLUNA as part of its scheduled services throughout its history: PLUNA had a codeshare agreement with Iberia , which operates the Montevideo–Madrid–Montevideo route. Under the same codeshare agreement, passengers also connected from Madrid to many destinations within Spain and also to Frankfurt . PLUNA also announced a codeshare agreement with American Airlines , which would have placed PLUNA's code on American's Miami-Montevideo route, if it had government approval. Prior to its collapse, PLUNA's fleet consisted of
1728-422: Is any international airline with a strong connection to its home country or that represents its home country internationally, regardless of whether it is government-owned. Flag carriers may also be known as such due to laws requiring aircraft or ships to display the state flag of the country of their registry . For example, under the law of the United States, a U.S. flag air carrier is any airline that holds
1824-919: Is the name given to the 737-300/400/500 series after the introduction of the -600/700/800/900 series of the Boeing 737 family. Produced from 1984 to 2000, a total of 1,988 Classic series were delivered. Close to the next major upgrade of single aisle aircraft at Airbus and Boeing, the price of jet fuel reached a peak in 2008, when airlines devoted 40% of the retail price of an air ticket to pay for fuel, versus 15% in 2000. Consequently, in that year carriers retired Boeing 737 Classic aircraft to reduce fuel consumption; replacements consisted of more efficient 737 Next Generation or A320 family aircraft. On June 4, 2008, United Airlines announced it would retire all 94 of its Classic 737 aircraft (64 737-300 and 30 737-500 aircraft), replacing them with A320 family jets taken from its Ted subsidiary, which has been shut down. This intensified
1920-516: The 737 MAX -7/8/9/10 variants, powered by improved CFM LEAP -1B high-bypass turbofans and accommodating 138 to 204 people, entered service in 2017. Boeing Business Jet versions have been produced since the 737NG, as well as military models. As of October 2024 , 16,705 Boeing 737s have been ordered and 11,898 delivered. Initially, its main competitor was the McDonnell Douglas DC-9 , followed by its MD-80 / MD-90 derivatives. In 2013,
2016-475: The Air Transport Association maintenance and engineering conference by chief project engineer Jack Steiner, where its elaborate high-lift devices raised concerns about maintenance costs and dispatch reliability. The original 737 continued to be developed into thirteen passenger, cargo, corporate and military variants. These were later divided into what has become known as the four generations of
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#17328721212982112-689: The Airbus A318 . The 737-700, the first variant of the Next-Generation, was launched in November 1993 with an order of 63 aircraft. The -700 seats 126 passengers in a two-class or 149 passengers in a one-class layout. The launch customer Southwest Airlines took the first delivery in December 1997. The 737-700 replaced the 737-300 and competes with the Airbus A319 . The 737-700C is a convertible version where
2208-464: The BAC One-Eleven (BAC-111), Douglas DC-9 , and Fokker F28 were already into flight certification. To expedite development, Boeing used 60% of the structure and systems of the existing 727, particularly the fuselage, which differs in length only. This 148-inch (3.76 m) wide fuselage cross-section permitted six-abreast seating compared to the rivals' five-abreast. The 727's fuselage was derived from
2304-768: The Boeing 727 on short and thin routes, the twinjet retained the 707 fuselage width and six abreast seating but with two underwing Pratt & Whitney JT8D low-bypass turbofan engines. Envisioned in 1964, the initial 737-100 made its first flight in April 1967 and entered service in February 1968 with Lufthansa . The lengthened 737-200 entered service in April 1968, and evolved through four generations, offering several variants for 85 to 215 passengers. The First Generation 737-100/200 variants were powered by Pratt & Whitney JT8D low-bypass turbofan engines and offered seating for 85 to 130 passengers. Launched in 1980 and introduced in 1984,
2400-536: The CFM LEAP -1B engine, with American Airlines intending to order 100 of these aircraft. On August 30, 2011, Boeing confirmed the launch of the 737 new engine variant, to be called the Boeing 737 MAX . It was based on earlier 737 designs with more efficient LEAP-1B power plants, aerodynamic improvements (most notably split-tip winglets ), and airframe modifications. It competes with the Airbus A320neo family that
2496-553: The CFM56 . The 737 went on to become the highest-selling commercial aircraft in terms of orders until surpassed by the competing Airbus A320 family in October 2019, but maintains the record in total deliveries. The fuselage is manufactured in Wichita, Kansas , by Boeing spin-off company Spirit AeroSystems , before being moved by rail to Renton. The Renton factory has three assembly lines for
2592-656: The U.S. Air Force . Some were modified into CT-43s, which are used to transport passengers, and one was modified as the NT-43A Radar Test Bed. The first was delivered on July 31, 1973, and the last on July 19, 1974. The Indonesian Air Force ordered three modified 737-200s, designated Boeing 737-2X9 Surveiller . They were used as Maritime reconnaissance (MPA)/transport aircraft, fitted with SLAMMAR (Side-looking Multi-mission Airborne Radar). The aircraft were delivered between May 1982 and October 1983. After 40 years, in March 2008,
2688-526: The "main national airline" and often a sign of their country's presence abroad. The heavily regulated aviation industry also meant aviation rights are often negotiated between governments, denying airlines access to an open market. These Bilateral Air Transport Agreements similar to the Bermuda I and Bermuda II agreements specify rights awardable only to locally registered airlines, forcing some governments to jump-start airlines to avoid being disadvantaged in
2784-410: The -500. The Boeing 737 Next Generation , abbreviated as 737 Next Gen or 737NG , is the name given to the main models 737-600/700/800/900 series and the extended range -700ER/900ER variants of the Boeing 737 family. It has been produced since 1996 and introduced in 1997, with a total order of 7,097 aircraft, of which 7,031 have been delivered as of May 2019 . The primary goal was to re-engine
2880-463: The 707. The proposed wing airfoil sections were based on those of the 707 and 727, but somewhat thicker; altering these sections near the nacelles achieved a substantial drag reduction at high Mach numbers. The engine chosen was the Pratt & Whitney JT8D -1 low-bypass ratio turbofan engine, delivering 14,500 pounds-force (64 kN ) of thrust. The concept design was presented in October 1964 at
2976-594: The 737 MAX; a fourth is planned to open at the Everett factory in 2024. The Boeing 737 Original is the name given to the -100/200 and -200 Advanced series of the Boeing 737 family. The initial model was the 737-100, the smallest variant of the 737 aircraft family, which was launched in February 1965 and entered service with Lufthansa in February 1968. In 1968, its unit cost was US$ 3.7M (1968), $ 32.4M today. A total of 30 737-100s were ordered: 22 by Lufthansa, 5 by Malaysia–Singapore Airlines (MSA) and 2 by Avianca with
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3072-421: The 737 project would not be canceled. Consultation with Lufthansa over the previous winter had resulted in the seating capacity being increased to 100. On April 5, 1965, Boeing announced an order by United Airlines for 40 737s. United wanted a slightly larger capacity than the 737-100, so the fuselage was stretched 36 inches (91 cm) ahead of, and 40 inches (102 cm) behind the wing. The longer version
3168-524: The 737 with the high pressure ratio CFM56-7. By the early 1990s, as the MD-80 slowly withdrew from the competition following the introduction of the MD-90, it had become clear that the new A320 family was a serious threat to Boeing's market share. Airbus won previously loyal 737 customers, such as Lufthansa and United Airlines. In November 1993, to stay in the single aisle competition, Boeing's board of directors authorized
3264-432: The 737-100 for commercial flight on December 15, 1967. It was the first aircraft to have, as part of its initial certification, approval for Category II approaches , which refers to a precision instrument approach and landing with a decision height between 98 and 197 feet (30 and 60 m). Lufthansa received its first aircraft on December 28, 1967, and on February 10, 1968, became the first non-American airline to launch
3360-525: The 737-900 and competes with the Airbus A321neo . The 737 MAX 10 was proposed as a stretched MAX 9 in mid-2016, enabling seating for 230 in a single class or 189 in two-class layout, compared to 193 in two-class seating for the A321neo. The modest 66-inch (1.7 m) stretch of fuselage enables the MAX 10 to retain the existing wing and CFM Leap 1B engine from the MAX 9 with a trailing-link main landing gear as
3456-408: The Boeing 737 family: The launch decision for the $ 150 million (~$ 1.11 billion in 2023) development was made by the board on February 1, 1965. The sales pitch was big-jet comfort on short-haul routes. Lufthansa became the launch customer on February 19, 1965, with an order for 21 aircraft, worth $ 67 million (~$ 494 million in 2023) after the airline had been assured by Boeing that
3552-528: The CFM56 included the U.S. Air Force with its program to re-engine KC-135 tankers. The passenger capacity of the aircraft was increased to 149 by extending the fuselage around the wing by 9 feet 5 inches (2.87 m). The wing incorporated several changes for improved aerodynamics. The wingtip was extended 9 inches (23 cm), and the wingspan by 1 foot 9 inches (53 cm). The leading-edge slats and trailing-edge flaps were adjusted. The tailfin
3648-456: The FAA cleared the MAX to return to service. Before the aircraft can fly again, repairs must be implemented and airlines' training programs must be approved. Passenger flights in the U.S. are expected to resume before the end of the year. Worldwide, the first airline to resume passenger service was Brazilian low-cost Gol , on December 9, 2020. The 737 MAX 7, a shortened variant of the MAX ;8,
3744-504: The Government of Uruguay started negotiations to sell 75% of it shares to a private consortium of investors from Germany , United States , Uruguay and Argentina called Leadgate Investment, a subsidiary of Latin American Regional Aviation Holding Corporation (LARAH), that committed to inject US$ 177 million in the company. In July the same year, the government awarded 75% of PLUNA's stock to LARAH, and
3840-525: The MD-80 and MD-90 aircraft, following Boeing's merger with McDonnell Douglas . The 737-800 is the most widely used narrowbody aircraft and competes primarily with the Airbus A320. The 737-900 was launched in 1997 and took its first flight on August 3, 2000. It retains the MTOW , fuel capacity, trading range for payload and also the exit configuration of the -800, limiting its seat capacity to approximately 177 in
3936-407: The Next Generation program to mainly upgrade the 737 Classic series. In late 1993, after engineering trade studies and discussions with major customers, Boeing proceeded to launch a second derivative of the Boeing 737, the 737 Next Generation (NG) -600/700/800/900 series. It featured a redesigned wing with a wider wingspan and larger area, greater fuel capacity, longer range and higher MTOWs . It
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4032-403: The Next Generation series. The 737-500 was offered as a modern and direct replacement of the 737-200. It was launched in 1987 by Southwest Airlines , with an order for 20 aircraft, and it flew for the first time on June 30, 1989. A single prototype flew 375 hours for the certification process, and on February 28, 1990, Southwest Airlines received the first delivery. The -500 incorporated
4128-533: The Second Generation 737 Classic -300/400/500 variants were upgraded with more fuel-efficient CFM56-3 high-bypass turbofans and offered 110 to 168 seats. Introduced in 1997, the Third Generation 737 Next Generation (NG) -600/700/800/900 variants have updated CFM56-7 high-bypass turbofans, a larger wing and an upgraded glass cockpit , and seat 108 to 215 passengers. The latest, and Fourth Generation,
4224-504: The acquisition of seven Bombardier CRJ-900s in a deal worth US$ 261 million was announced. In late October 2007 ( 2007-10 ) , PLUNA presented its new corporate image , developed by Australian design company Cato Partners. This new image is based on the interpretation of the name "Uruguay" as meaning "river of the painted birds" or "river of the colorful birds" ( Spanish : Río de los pájaros pintados ). The first of seven brand new CRJ900s that would be incorporated into
4320-423: The acquisition of the airline's first aircraft. The airline flew two five-seater de Havilland Dragonflys from Montevideo to Salto and Paysandú . The two planes were christened Churrinche and San Alberto , the latter in honor of the brothers' father. PLUNA flew 2,600 passengers in their first fiscal year, a huge success for that era. It also flew 20,000 pieces of mail and 70,000 newspapers. The carrier saw
4416-473: The aft fuselage instead of as a T-tail. Many designs for the engine attachment strut were tested in the wind tunnel and the optimal shape for high speed was found to be one which was relatively thick, filling the narrow channels formed between the wing and the top of the nacelle, particularly on the outboard side. At the time, Boeing was far behind its competitors; the SE 210 Caravelle had been in service since 1955, and
4512-539: The aircraft to modern specifications, while also retaining commonality with previous 737 variants. In 1980, preliminary aircraft specifications of the variant, dubbed 737-300, were released at the Farnborough Airshow . This first major upgrade series was later renamed 737 Classic. It competed primarily with the MD-80, its later derivative the MD-90 , and the newcomer Airbus A320 family . Boeing engineer Mark Gregoire led
4608-520: The airline down and liquidate it. The carrier was wholly owned by the government at the time of its closure. The airline was established in September 1936, and started operations the following month, on 19 November 1936. It was set up by Jorge and Alberto Márquez Vaesa, two brothers who had obtained the necessary financial and technical support through the ambassador of the United Kingdom to Uruguay at
4704-578: The airline's major shareholders were the Government of Uruguay (49%) and Varig (49%), and private investors held the balance. When Varig entered Chapter 11 bankruptcy protection on 17 June 2005, it sought a bidder for its 49% stake in PLUNA. For almost a year, it looked as if it might go to Venezuela's state-run Conviasa , but the deal officially fell through in July ;2006 ( 2006-07 ) . On 4 January 2007,
4800-595: The cities of Santa Cruz in Bolivia and Buenos Aires , Rosario and Córdoba in Argentina to its network. The airline became a wholly government-owned company on 12 November 1951. After World War II, PLUNA's fleet included two Douglas DC-2s which were operated on the Montevideo–Paysandú–Salto route until they were retired by 1951. In the same year, a Douglas DC-3 and four de Havilland Herons were added to
4896-462: The competition between the two giant aircraft manufacturers, which has since become a duopoly competition . An optional upgrade with winglets became available for the Classic and NG series. Development began in 1979 for the 737's first major revision, which was originally introduced as the 'new generation' of the 737. Boeing wanted to increase capacity and range, incorporating improvements to upgrade
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#17328721212984992-450: The denser, 200-seat MAX 200), and MAX 9 replace the 737-700, -800, and -900 respectively. The further stretched 737 MAX 10 has also been added to the series. The aim was to re-engine the 737NG family using CFM LEAP-1B engines having very high bypass ratio, to compete with the Airbus A320neo family. On July 20, 2011, Boeing announced plans for a third major upgrade and respectively fourth generation of 737 series to be powered by
5088-437: The engines to the wings which lightened the structure and simplified the accommodation of six-abreast seating in the fuselage. The engine nacelles were mounted directly to the underside of the wings, without pylons, allowing the landing gear to be shortened, thus lowering the fuselage to improve baggage and passenger access. Relocating the engines from the aft fuselage also allowed the horizontal stabilizer to be attached to
5184-421: The face of foreign competition. Some countries also establish flag carriers such as Israel 's El Al or Lebanon 's Middle East Airlines for nationalist reasons or to aid the country's economy, particularly in the area of tourism. In many cases, governments would directly assist in the growth of their flag carriers typically through subsidies and other fiscal incentives. The establishment of competitors in
5280-606: The final 737-200 aircraft in the U.S. flying scheduled passenger service were phased out, with the last flights of Aloha Airlines . As of 2018, the variant still saw regular service through North American charter operators such as Sierra Pacific Airlines . The short-field capabilities of the 737-200 led Boeing to offer the "Unpaved Strip Kit" (see the Air North example, right). This option reduced foreign object damage when operated on remote, unimproved or unpaved runways, that competing jetliners could not use safely. The kit included
5376-411: The final commercial aircraft delivered to MSA on October 31, 1969. This variant was largely overshadowed by its bigger 737-200 sibling, which entered service two months later. The original engine nacelles incorporated thrust reversers taken from the 727 outboard nacelles. They proved to be relatively ineffective and tended to lift the aircraft up off the runway when deployed. This reduced the downforce on
5472-479: The first variant of the 737 MAX, has a longer fuselage than the MAX 7. On July 23, 2013, Boeing completed the firm configuration for the 737 MAX 8. Its first commercial flight was operated by Malindo Air on May 22, 2017. The MAX 8 replaced the 737-800 and competed with the A320neo. The 737 MAX 200 , a high-density version of the 737 MAX 8, was launched in September 2014 and named for seating for up to 200 passengers in
5568-510: The fleet during 2008 arrived in March that year; these new aircraft permitted increasing frequencies to existing routes, as well as expanding services to new destinations. In April 2010 ( 2010-04 ) , the Canadian airline holding company Jazz Air Income Fund invested US$ 15 million in LARAH. The move gave this holding an indirect control of 25% of the Uruguayan flag carrier, as LARAH had
5664-690: The fleet. The Herons only stayed in PLUNA's fleet for a short time and by 1957, they had been sold. The DC-3s remained in service much longer, and in 1971, the last four of them were sold to the Fuerza Aérea Uruguaya . São Paulo was added to the route network in January 1954. On 24 June 1958, the carrier entered the turbine era with the delivery of its first of three Vickers Viscounts four-engined turboprops purchased new from Vickers; it later acquired two Viscount 700s from Alitalia and three Viscount 800s from VASP . PLUNA's growth slowed considerably for
5760-560: The following aircraft, as of June 2012. The carrier also operated the following aircraft types throughout its history: PLUNA had only one fatal accident with the loss of ten crew members, the Aviation Safety Network records 3 hull-loss accidents/incidents for the airline. [REDACTED] Media related to PLUNA at Wikimedia Commons Flag carrier A flag carrier is a transport company, such as an airline or shipping company, that, being locally registered in
5856-406: The form of other locally registered airlines may be prohibited or heavily regulated to avoid direct competition. Even where privately run airlines may be allowed to be established, the flag carriers may still be accorded priority, especially in the apportionment of aviation rights to local or international markets. Near the end of the 20th century, many of these airlines have been corporatized as
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#17328721212985952-554: The global 737 fleet had completed more than 184 million flights over 264 million block hours since its entry into service. It was the highest-selling commercial aircraft until being surpassed by the competing Airbus A320 family in October 2019, but maintains the record in total deliveries. The 737 MAX, designed to compete with the A320neo , was grounded worldwide between March 2019 and November 2020 following two fatal crashes. Boeing had been studying short-haul jet aircraft designs, and saw
6048-479: The government to have any stake in PLUNA's successor. In September 2012 ( 2012-09 ) , the auction of the seven Bombardier aircraft that belonged to the liquidated carrier was delayed until October 2012 ( 2012-10 ) as there were no bidders. Cosmo Airlines, a Spanish charter carrier, eventually purchased the seven aircraft at a price of $ 137 million. Regionally, the void created by PLUNA's collapse benefited foreign airlines on some routes. In 2016,
6144-422: The highest number in its history. In early June 2012 ( 2012-06 ) , PLUNA's then CEO , Matías Campiani , disclosed that the airline might face collapse amid a financial distress that led to a loss of US$ 18 million for the eight months ending in February the same year, partly due to the protectionism of the government of Argentina —where the carrier concentrated 21% of its operations— following
6240-487: The holding later sold half of its participation in PLUNA to Varig . At April 2000 ( 2000-04 ) , the airline had 635 employees. At this time the fleet consisted of six Boeing 737-200 Advanced and one McDonnell Douglas DC-10-30 to serve a network that included Asunción , Buenos Aires , Cordoba , Florianópolis , Madrid , Montevideo , Punta del Este , Rio de Janeiro , Rosario , Salvador , Santiago and São Paulo . By late June 2005 ( 2005-06 ) ,
6336-482: The improvements of the 737 Classic series, allowing longer routes with fewer passengers to be more economical than with the 737-300. The fuselage length of the 737-500 is 1 foot 7 inches (48 cm) longer than the 737-200, accommodating up to 140 passengers. Both glass and older-style mechanical cockpits arrangements were available. Using the CFM56-3 engine also gave a 25 percent increase in fuel efficiency over
6432-809: The incorporation of both the Potez 62 and the Douglas DC-2 into its fleet in the early 1940s, the latter acquired from the U.S. government . Following the outbreak of World War II , PLUNA was forced to suspend operations between 1942, and 1944, due to the lack of spare parts . The delicate position PLUNA was in at this time led the Uruguayan Government to aid the company by boosting its stake to 85% on 16 October 1944. The first Douglas DC-3 entered PLUNA's fleet in February 1946. The airline launched regular services to Porto Alegre , Brazil , in May 1948. The carrier later added
6528-438: The larger diameter of the engine over the original Pratt & Whitney engines. Gregoire's team and CFM solved the problem by reducing the size of the fan (which made the engine slightly less efficient than it had been forecast to be), placing the engine ahead of the wing, and by moving engine accessories to the sides of the engine pod, giving the engine a distinctive non-circular "hamster pouch " air intake. Earlier customers for
6624-428: The last 737-100s in service. The first aircraft used by Boeing as prototype under registration N73700 was later ordered by and delivered to NASA on July 26, 1973, which then operated it under registration N515NA and retired after 30 years on September 27, 2003. The last 737-100 built and also the last operating was originally sold to Malaysia–Singapore Airlines : it was transferred to Air Florida before being used as
6720-402: The longer length. Entry into service with launch operator Southwest Airlines was expected in January 2019, but the airline deferred these orders until 2023–2024. The 737 MAX 7 replaced the 737-700 and was predicted to carry 12 more passengers and fly 400 nautical miles (740 km; 460 mi) farther than the competing Airbus A319neo with 7% lower operating costs per seat. The 737 MAX 8,
6816-477: The main wheels thereby reducing the effectiveness of the wheel brakes. In 1968, an improvement to the thrust reversal system was introduced. A 48-inch tailpipe extension was added and new target-style thrust reversers were incorporated. The thrust reverser doors were set 35 degrees away from the vertical to allow the exhaust to be deflected inboard and over the wings and outboard and under the wings. The improvement became standard on all aircraft after March 1969, and
6912-494: The meantime, as the city of Punta del Este flourished as a major tourist destination, PLUNA benefited from that. During this time, an office was also opened in Tel Aviv , Israel . The 1990s, saw financial trouble loom for PLUNA. In 1995, the company was transformed into a public–private partnership and the government sold 51% of the shares to a holding formed by an Argentine consortium named Tevycom and Uruguayan businessmen;
7008-449: The next three decades, but it entered the jet age soon after jets were introduced to the world, and added John F. Kennedy International Airport (JFK) in New York , and Miami to its destinations, using Boeing 707 and Boeing 737 aircraft. In the 1980s, PLUNA began flying to Madrid , Asunción , Rio de Janeiro and Santiago de Chile , but services to JFK and Miami were suspended. In
7104-413: The older 737-200s P&W engines. The 737-500 has faced accelerated retirement due to its smaller size, after 21 years in service compared to 24 years for the -300. While a few 737-300s were slated for freighter conversion, no demand at all existed for a -500 freighter conversion. The 737-500 was replaced by the 737-600 of the Next Generation series, though the -600 was not as successful in total orders as
7200-500: The only major change. The MAX 10 was launched on June 19, 2017, with 240 orders and commitments from more than ten customers. The variant configuration with a predicted 5% lower trip cost and seat cost compared to the A321neo was firmed up by February 2018, and by mid-2018, the critical design review was completed. The MAX 10 has a similar capacity to the A321XLR, but shorter range and much poorer field performance in smaller airports. It
7296-582: The original -200s and respectively -100s. The 737-200 Advanced became the production standard in June 1971. Boeing also provided the 737-200C ( Combi ), which allowed for conversion between passenger and cargo use and the 737-200QC (Quick Change), which facilitated a rapid conversion between roles. The 1,114th and last delivery of a -200 series aircraft was in August 1988 to Xiamen Airlines . Nineteen 737-200s, designated T-43 , were used to train aircraft navigators for
7392-453: The primary competitor for the 737NG series remained only the A320 family. The 737-600, the smallest model of the Next-Generation, was launched by Scandinavian Airlines (SAS) in March 1995 with the first aircraft delivered in September 1998. A total of 69 aircraft without winglets have been produced with the last one delivered to WestJet in 2006. The 737-600 replaced the 737-500 and is similar to
7488-527: The renationalisation of Aerolíneas Argentinas in 2008, and partly due to the slowdown of the Brazilian economy in the preceding months. Later on, with losses totalling US$ 300 million, Leadgate disposed of their 75% stake in the airline, transferring it back to the Uruguayan government. By that time, that percentage of PLUNA's stock was owned by LARAH, which was in turn 75% owned by Leadgate and 25% by Jazz Air . Despite being initially disclosed that Jazz Air
7584-572: The result that there is no single "flag carrier". The chart below lists airlines considered to be a "flag carrier", based on current or former state ownership or other verifiable designation as a national airline. Minority (20.05%) in the Lufthansa Group acquired in 2020 was sold in 2022. Boeing 737 The Boeing 737 is an American narrow-body airliner produced by Boeing at its Renton factory in Washington . Developed to supplement
7680-450: The seats can be removed to carry cargo instead. There is a large door on the left side of the aircraft. The United States Navy was the launch customer for the 737-700C under the military designation C-40 Clipper . The 737-700ER (Extended Range ) was launched on January 31, 2006, and featured the fuselage of the 737-700 and the wings and landing gear of the 737-800. A 737-700ER can typically accommodate 126 passengers in two classes with
7776-442: The series has received 5,011 firm orders. In March 2019, civil aviation authorities around the world grounded the 737 MAX following two hull loss crashes which caused 346 deaths. On December 16, 2019, Boeing announced that it would suspend production of the 737 MAX from January 2020, which was resumed in May 2020. In the midyear 2020, the FAA and Boeing conducted a series of recertification test flights. On November 18, 2020,
7872-520: The three European short-haul single aisles slowly withdrew from the competition. Sales were low in the early 1970s and, after a peak of 114 deliveries in 1969, only 22 737s were shipped in 1972 with 19 in backlog. The US Air Force saved the program by ordering T-43s , which were modified Boeing 737-200s. African airline orders kept the production running until the 1978 US Airline Deregulation Act , which improved demand for six-abreast narrow-body aircraft. Demand further increased after being re-engined with
7968-472: The time, Sir Eugen Millington-Drake . Millington-Drake wrote in his memoirs that he suggested the airline be named using a memorable acronym, taking SABENA as an example. It was then decided on "PLUNA", an acronym for Primeras Líneas Uruguayas de Navegación Aérea (English: First Uruguayan Air Navigation Lines ). Millington-Drake knew De Havilland's representative in Buenos Aires at the time, which helped in
8064-400: Was US$ 4.0M (1968) ($ 35M today). The -200's unit cost was US$ 5.2M (1972) ($ 37.9M today). The 737-200 Advanced is an improved version of the -200, introduced into service by All Nippon Airways on May 20, 1971. After aircraft #135, the 737-200 Advanced has improved aerodynamics, automatic wheel brakes, more powerful engines, more fuel capacity, and hence a 15% increase in payload and range over
8160-450: Was designated the -300SP ( Special Performance ). The 737-300 was replaced by the 737-700 of the Next Generation series. The 737-400 was launched in 1985 to fill the gap between the 737-300 and the 757-200. In June 1986, Boeing announced the development of the 737-400, which stretched the fuselage a further 10 feet (3.0 m), increasing the capacity to 188 passengers, and requiring a tail bumper to prevent tailstrikes during take-off and
8256-478: Was designated the 737-200, with the original short-body aircraft becoming the 737-100. Detailed design work continued on both variants simultaneously. The first -100 was rolled out on January 17, 1967, and took its maiden flight on April 9, 1967, piloted by Brien Wygle and Lew Wallick. After several test flights the Federal Aviation Administration (FAA) issued Type Certificate A16WE certifying
8352-502: Was due to be retired in early 2023. As of September 2023 , a relatively high number of 737-200s remain in service compared to other early jet airliners, with fifty examples actively flying for thirty carriers. During the 737 MAX groundings , older 737s, including the 200 and Classic series , were in demand for leasing. C-GNLK, one of Nolinor's 737-200s, is the oldest jet airliner in commercial service as of 2024, having entered service 50 years prior in 1974. The Boeing 737 Classic
8448-414: Was due to enter service in April 2019. The 737 MAX 9, the stretched variant of the MAX 8, was launched with an order of 201 aircraft in February 2012. It made its roll-out on March 7, 2017, and first flight on April 13, 2017; It was certified by February 2018. The launch customer, Lion Air Group, took the first MAX 9 on March 21, 2018, before entering service with Thai Lion Air . The 737 MAX 9 replaced
8544-405: Was equipped with CFM56-7 high pressure ratio engines, a glass cockpit , and upgraded interior configurations. The four main models of the series can accommodate seating for 108 to 215 passengers. It was further developed into additional versions such as the corporate Boeing Business Jet (BBJ) and military P-8 Poseidon aircraft. Following the merger between Boeing with McDonnell Douglas in 1997,
8640-553: Was introduced to meet the range and passenger capacity of the discontinued 757-200 and to directly compete with the Airbus A321 . The Boeing 737 MAX is the name given to the main models 737 MAX 7/8/9/10 series and the higher-density MAX 200 variant of the Boeing 737 family. It is offered in four main variants, typically offering 138 to 230 seats and a range of 3,215 to 3,825 nautical miles [nmi] (5,954 to 7,084 km; 3,700 to 4,402 mi). The 737 MAX 7, MAX 8 (including
8736-437: Was launched in December 2010 and reached 1,029 orders by June 2011, breaking Boeing's monopoly with American Airlines , which had an order for 130 A320neos that July. The 737 MAX had its first flight on January 29, 2016, and gained FAA certification on March 8, 2017. The first delivery was a MAX 8 on May 6, 2017, to Lion Air 's subsidiary Malindo Air , which put it into service on May 22, 2017. As of January 2019 ,
8832-402: Was not a model delivered by Boeing and hence the nickname Special Freighter (SF) . Alaska Airlines was the first to convert one of their 400s from regular service to an aircraft with the ability to handle 10 pallets. The airline had also converted five more into fixed combi aircraft for half passenger and freight. These 737-400 Combi aircraft were retired in 2017 and replaced by the 737-700F of
8928-452: Was not interested in taking over the entire 75% stock, and that it was later informed that the Canadian airline was evaluating the acquisition, the government suspended PLUNA's operations on 5 July 2012 ( 2012-07-05 ) —following a strike that started two days earlier, after failing to find new investors for the company. The government announced that both PLUNA's fleet and routes would be auctioned. It seemed there were no plans for
9024-497: Was originally based on the 737-700, flying 1,000 nautical miles (1,900 km; 1,200 mi) farther and accommodating two more seat rows at 18% lower fuel costs per seat. The redesign uses the 737-8 wing and landing gear; a pair of over-wing exits rather than the single-door configuration; a 46-inch-longer (1,200 mm) aft fuselage and a 30-inch-longer (760 mm) longer forward fuselage; structural re-gauging and strengthening; and systems and interior modifications to accommodate
9120-450: Was redesigned, the flight deck was improved with the optional EFIS (Electronic Flight Instrumentation System), and the passenger cabin incorporated improvements similar to those developed on the Boeing 757 . The prototype -300, the 1,001st 737 built, first flew on February 24, 1984, with pilot Jim McRoberts. It and two production aircraft flew a nine-month-long certification program. The 737-300 retrofitted with Aviation Partners ' winglets
9216-492: Was widely preferred over the -100 by airlines. The improved version, the 737-200 Advanced, was introduced into service by All Nippon Airways on May 20, 1971. The 737 original model with its variants, known later as the Boeing 737 Original , initially competed with SE 210 Caravelle and BAC-111 due to their earlier entry into service and later primarily with the McDonnell Douglas DC-9, then its MD-80 derivatives as
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