Boeing 737 Classic Totally Explained

Everything about Boeing 737-400 totally explained

The Boeing 737 Classic is the name given to the -300/-400/-500 series of the Boeing 737 after the introduction of the -600/700/800 series. They are American short to medium range, single aisle, narrow body jet airliners. The Classic series was introduced as the 'new generation' of the 737. Produced from 1988 to 2000, 1,988 aircraft were delivered. As of 1 January 2001, 1,945 remain in service. In March 1981 USAir and Southwest Airlines each ordered 10 aircraft, with an option for 20 more.
   The new series featured CFM56 turbofan engines, 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. Boeing and engine supplier CFMI solved the problem by placing the engine ahead of (rather than below) the wing, and by moving engine accessories to the sides (rather than the bottom) of the engine pod, giving the 737 a distinctive non-circular air intake.
   The wing incorporated a number of changes for improved aerodynamics. The wing tip was extended 9 in (23 cm). The leading-edge slots and trailing-edge flaps were adjusted. After it received its flight certification on 14 November 1984, USAir received the first aircraft on 28 November. A very popular aircraft, Boeing received 252 orders for it in 1985, and over 1000 throughout its production. The 300 series remained in production until 1999 when the last aircraft was delivered to Air New Zealand on December 17, 1999.
   The 737-300 can be retrofitted with Aviation Partners Boeing winglets. The 737-300 retrofitted with winglets is designated the -300SP (special performance). Used passenger -300 aircraft have also been converted to freighter versions.

737-400

The 737-400 design was launched in 1985 to fill the gap between the 737-300 and the 757-200, and compete with the Airbus A320. It stretched the 737-300 another 10 ft (3.45 m) to carry up to 168 passengers, but was otherwise identical in size to the -300. It included a tail bumper to prevent tailscrapes during take-off (an early issue with the 757), a strengthened wing spar, and additional spoilers. The airplane was also upgraded to a full glass cockpit as standard equipment. The prototype rolled out on 26 January 1988, and flew for the first time on 19 February 1988.
The aircraft entered service in on 15 September 1988 with launch customer Piedmont Airlines (25 aircraft ordered). Using the CFM56-3 engine also gave a 25% increase in fuel efficiency over the older -200s P&W engines. and flew for the first time on 30 June 1989. !737-400 !737-500 |- bgcolor="#EEEEEE" |Cockpit Crew || colspan=3 | Two |- bgcolor="#EEEEEE" |Seating capacity || 149 (1-class, dense),
128 (1-class, standard) || 168 (1-class, dense),
159 (1-class, standard) || 132 (1-class, dense),
123 (1-class, standard)) |- bgcolor="#EEEEEE" |Seat Pitch || 31" || colspan=2 | 30" (1-class, dense), 32" (1-class, standard) |- bgcolor="#EEEEEE" |Seat width || colspan=3 | 17.2" (1-class, 6 abreast seating) |- bgcolor="#EEEEEE" |Airplane Length || 33.4 m
(109 ft 7 in) || 36.5 m
(119 ft 6 in) || 31.1 m
(101 ft 8 in) |- bgcolor="#EEEEEE" |Wingspan || 28.88 m
(94 ft 9 in) || colspan=2 | 28.9 m
(94 ft 8 in) |- bgcolor="#EEEEEE" |Airplane Height || 11.13 m
(36 ft 6 in) || colspan=2 | 11.1 m
(36 ft 5 in) |- bgcolor="#EEEEEE" |Wing Sweepback || colspan=3 | 25° |- bgcolor="#EEEEEE" |Aspect Ratio || 9.11 || colspan = 2 | 9.16 |- bgcolor="#EEEEEE" |Fuselage Width || colspan=3 | 3.76 m (12 ft 4 in) |- bgcolor="#EEEEEE" |Fuselage Height || colspan=3 | 4.11 m (13' 6") |- bgcolor="#EEEEEE" |Cabin Width || colspan=3 | 3.54 m (11 ft 7 in) |- bgcolor="#EEEEEE" |Cabin Height || colspan=3 | 2.20 m (7 ft 3 in) |- bgcolor="#EEEEEE" |Weight Empty || 32,700 kg
(72,100 lb) || 33,200 kg
(73,040 lb) || 31,300 kg
(68,860 lb) |- bgcolor="#EEEEEE" |Maximum take-off weight || 62,820 kg
(138,500 lb) || 68,050 kg
(149,710 lb) || 60,550 kg
(133,210 lb) |- bgcolor="#EEEEEE" |Maximum landing weight || 51,700 kg
(114,000 lb) || 56,200 kg
(124,000 lb) || 50,000 kg
(110,000 lb) |- bgcolor="#EEEEEE" |Maximum zero-fuel weight || X kg
(X lb) || 53,100 kg
(117,000 lb) || 46,700 kg
(103,000 lb) |- bgcolor="#EEEEEE" |Cargo Capacity || 23.3 m³
(822 ft³) || 38.9 m³
(1,373 ft³) || 23.3 m³
(822 ft³) |- bgcolor="#EEEEEE" |Takeoff run at MTOW || 2,300 m (4,700 ft) || 2,540 m (8,483 ft) || 2,470 m (8,249 ft) |- bgcolor="#EEEEEE" |Service Ceiling || colspan=3 | 37,000 ft |- bgcolor="#EEEEEE" |Cruising speed (mach)|| | 0.745 || colspan=2 | 0.74 |- bgcolor="#EEEEEE" |Maximum speed (mach) || colspan=3 | 0.82 |- bgcolor="#EEEEEE" |Range fully loaded || 4,204 km (2,270 NM) || 4,204 km (2,270 NM) || 4,444 km (2,402 NM) |- bgcolor="#EEEEEE" |Max. fuel capacity || 23,170 L
6,130 USG || 23,800 L
6,296 USG || 23,800 L
6,296 USG |- bgcolor="#EEEEEE" |Engine manufacturer|| colspan=3 | CFM International |- bgcolor="#EEEEEE" |Engine type (x2)|| 56-3B-1 || 56-3B-2 || 56-3B-1 |- bgcolor="#EEEEEE" |Takeoff Thrust || 90 kN (20,000 lbf) || 98 kN (22,000 lbf) || 90 kN (20,000 lbf) |- bgcolor="#EEEEEE" |Cruising Thrust || 21,810 N (4,902 lbf) || 21,900 N (4,930 lbf) || 21,810 N (4,902 lbf) |- bgcolor="#EEEEEE" |Fan Tip Diameter || 1.52 m (60 in) || colspan=2 | 1.52 m (60 in) |- bgcolor="#EEEEEE" |Engine Bypass Ratio || 5.0:1 || 4.9:1 || 5.0:1 |- bgcolor="#EEEEEE" |Engine Length || colspan=3 | 2.36 m (93 in) |- bgcolor="#EEEEEE" |Engine Weight (dry) || colspan=3 | 2,409.5 kg (4,301 lb) |- bgcolor="#EEEEEE" |Engine Ground Clearance || colspan=3 | 46 cm (18 in) |}
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Incidents and accidents

January 8, 1989: Kegworth air disaster: British Midland Flight 92, using a 737-4Y0, crashed outside of East Midlands Airport. Of the 8 crew and 118 passengers, 47 passengers died.

February 1, 1991: USAir Flight 1493, using a 737-3B7, collided with a SkyWest Fairchild Metro III while landing in Los Angeles. All of the people on the Fairchild Metro died while 20 passengers and 2 crew members out of 6 crew members and 83 passengers died on the 737.

July 26, 1993: Asiana Airlines Flight 733, using a 737-5L9, crashed into a mountain, killing 68 of 110 occupants.

September 8, 1994: USAir Flight 427, using a 737-3B7, lost control after a rudder malfunction and crashed outside of Pittsburgh International Airport, killing everyone on board.

May 8, 1997: China Southern Airlines Flight 3456, using a 737-31B, crashed while landing in Shenzhen, killing 33 of 65 passengers and 2 of 9 crew members.

December 19, 1997: SilkAir Flight 185, using a 737-36N, crashed into a river in Indonesia, killing everyone on board.

April 7, 1999: Turkish Airlines Flight 5904, using a 737-4Q8 with six crew members, crashed in Turkey. All of the crew on board died; no passengers flew on that flight.

March 5, 2000: Southwest Airlines Flight 1455, using a 737-3T5, overran the runway upon landing in Burbank, California, United States and crashed. All of the passengers and crew survived.

January 3, 2004: Flash Airlines Flight 604, using a 737-3Q8, crashed into the Red Sea, killing everyone on board.

June 9, 2005: 2005 Logan Airport runway incursion - A 737-3B7 operated by US Airways as US Airways Flight 1170 avoided collision with an Aer Lingus Airbus A330 at Logan Airport in Boston, Massachusetts, United States.

August 14, 2005: Helios Airways Flight 522, using a 737-31S, suffered a gradual decompression which incapacitated 5 of the 6 crew members and all of the 115 passengers. The plane circled around Greece before crashing into a hill, killing everyone on board.

October 3, 2006: A man hijacked Turkish Airlines Flight 1476, Boeing 737-400. The aircraft landed in Italy and all of the passengers and crew survived.

January 1, 2007: Adam Air Flight 574, using a 737-4Q8 with 96 passengers and 6 crew members, crashed off the coast of Sulawesi. All of the occupants died.

February 21, 2007: Adam Air Flight 172, using a 737-33A, suffered a structural failure when landing at Juanda International Airport. All of the passengers and crew survived.

March 7, 2007: Garuda Indonesia Flight 200, using a 737-497, crashed upon landing at Adisucipto International Airport. Out of 133 passengers and 7 crew members 21 passengers and 1 crew member died.Further Information

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