How many seats on a Boeing 737 300. General information about the liner. Which places should not be accepted?

People who often use the services of airlines know that it is possible to get to a very uncomfortable place and then the flight can turn into several hours of torture. The most common inconveniences are the lack of a porthole, the small distance between the rows and the inability to settle comfortably with legs stretched out.

To avoid similar situation quite simple: you should familiarize yourself with the layout of seats in the cabin and the reviews of passengers in advance, and then make right choice in the process of purchasing an air ticket. We will talk about the features of the location of the seats on the Boeing 737-300 aircraft, the best places in the cabin layout presented below.

General information about the liner

The Boeing 737 300 is a twin-engine jet aircraft with a narrow fuselage and is used for passenger traffic. The first flight was made in 1984, and the production line was completed in 2000. For 16 years, 1113 pieces of equipment were produced. The predecessor of the 300 model was the Bóeing 737-200, but only the climate system, airframe components and piloting system were taken from it, otherwise the 300 is a completely different design.

The model was lengthened by 2.64 meters, additional sections were added to the wings, achieving a larger span. The installation of CFM International CFM56-3B-1 bypass turbofan engines with a takeoff thrust of about 90 kN made it possible to increase the power and speed of the concept. The cockpit was enlarged and advanced, at that time, EFIS digital avionics was installed.

The salon has also undergone improvements and has become much more spacious and comfortable. In general, Boeing received a lot of positive feedback from grateful passengers and enjoyed undeniable popularity among world airlines. The main criteria were excellent technical specifications model and its strength.

Note! The Boeing 737 does not have main landing gear doors. The main landing gear drives in and out of the recess of the aircraft fuselage and has almost no effect on the aerodynamic properties of the aircraft.

Cabin on the Boeing 737-300

Advantages and disadvantages of the Boeing 737-300

In the process of choosing an airliner before the flight, it will not be superfluous to familiarize yourself with its strengths and weaknesses, shortcomings and advantages. Boeing has the following features:

1. Takes off and lands superbly. Many passengers do not even notice how the takeoff or landing began, this is the merit of not only the pilots, but also the designers of this model.
2. Ability to provide a high level of service.
3. Pretty comfortable lounge.

One of the few disadvantages of Boeing according to passenger reviews is the existence of uncomfortable seats. In some companies, the 300ths have reached the peak of the technical deterioration of the airliner itself, which may make it not look presentable enough.

Salon scheme

Salon scheme

Before buying a ticket, there is always the opportunity to see what the Boeing 737 300 has a cabin layout and choose the most suitable seat for you. Consider the features of the layout of the seats and the plan of a typical aircraft:

1. Rows 1 and 2 are business class seats with extended seat spacing of 41 inches or 105 centimeters. The second row is preferred because there is a partition in front of the first, which will have to be considered throughout the flight. Yet best places according to the layout of the cabin in the Boeing 737 300, these are the ones at the very beginning of the aircraft.
2. Further in the Boeing 737 300 follow nothing notable rows without features, except that according to the scheme it is worth monitoring the presence of portholes.
3. Starting from the 10th row, there is an economy class. The partition between classes is shortened, so seats A, B, E, F are the least preferable because of the partition, located even closer than in business class. But these seats have an advantage, essential in conditions of limited space: no one will lean back on you. But seats C and D are located where the partition ends, and it is more comfortable to sit on them. It is even possible to put your feet in the aisle, if this does not interfere with the flight attendants and other passengers.
4. The 16th row is uncomfortable due to the inability to recline the chair, because emergency exits are located behind the 16th row. The place is suitable for a short flight.
5. By right, the 17th row is considered the best in the plane. Due to the fact that he is after emergency exit, then a lot of space is allocated in front of the legs, the back of the chair leans back, creating additional comfort. The disadvantage of the place is the impossibility of staying on it with children or animals, and disabled people cannot be accommodated on it. Also, you can’t put a backpack under your feet, because it is strictly forbidden to clutter up the passage with luggage.
6. Seats C and D on the 28th row are also not very convenient due to the fact that they are in close proximity to the toilet, a lot of people pass by, and queues form.
7. Well, the most disadvantageous are the places on the 29th row, called tourist class places. The backs do not recline due to the fact that they are close to the toilet wall, a lot of people pass by, and when the stewardess reaches you with food and drinks, it may turn out that there are almost no goodies left.

Attention! Customers of many foreign airlines who used the services of the Boeing 737-300 report that there are often no windows from the 11th to the 15th row. Therefore, be vigilant and carefully, study the seating chart.

aircraft capacity

Initially, the developers designed aircraft with a capacity of 149 people. This number of people was accommodated under the condition of a single-class arrangement of seats with a distance between them of 32 inches. But often airlines equip business class seats in the cabin and the number seats decreases to 128.

Seats

Placement of seats of different levels of comfort

Back in 1950, the French airline Air France introduced seats of different levels of comfort on its flights. Since then there has been optimal choice both for a budget tourist and for a person accustomed to comfort and a special attitude. Comfort levels are divided into 3 classes:

• first class F;
• business class C;
• economy class Y.

Due to the fact that the first class is very expensive and only a few use it, European airlines for the most part, they refused it, relying on economy and business classes.

Business class features

Business class passenger privileges begin at the airport building. At check-in, a separate desk is provided, you can use the superior comfort rooms.

Seats in business class are distinguished by special amenities. They are characterized by increased legroom and wide armchairs. Stretching your legs and reclining your back, you can sleep peacefully, read comfortably, and so on.

The amount of luggage is almost doubled in comparison with the economy class. It is allowed to take two suitcases up to 35 kilograms and two pieces of hand luggage of approximately the same weight on board.

Food and drinks are always an order of magnitude more diverse than in economy class. Meals are served in dinner sets, not in plastic dishes. In addition to tea and coffee, it is possible to order alcoholic drinks. Passengers have access to a Wi-Fi network and fresh periodicals.

Economy class feature

Economy seats

If we talk about economy class passengers, then they check in at the general check-in counters and wait for the flight in ordinary waiting rooms.

Seats in economy class are small, but occupy most of the cabin, because they are more popular among budget tourists. The width of the seat is about 43-46 centimeters, and the distance to the front seat is 74-81 centimeters on regional flights and 75-91 centimeters on international flights.

Each airline sets its own baggage restrictions, but most often - one piece of baggage up to 30 kilograms and one piece of hand luggage. Low cost companies do not include luggage in the ticket pricing at all, so be careful when booking a seat.

Economy class ticket holders cannot always count on free wifi It all depends on the airline. During a flight lasting more than two hours, you can count on lunch, tea or coffee. Sometimes included in the price travel set for a child.

Note! Passengers flying in transit should purchase seats in the front of the cabin. So they have the opportunity to quickly get off the flight and get on the next plane in time.

Airlines using Boeing 737-300

Boeing 737-300 used by Belavia

The popularity of Boeings is confirmed by the fact that they are used by various world airlines. Boeing 737-300 passenger transportation services are provided by the following companies:

1. OJSC Belavia Airlines.
2. Airline Azur Air.
3. PJSC Aeroflot.
4. Pegas Fly (Pegasus Fly) or Ikar Airlines LLC.
5. UTair Airlines, Russia.
6. Air Baltic airline.
7. JSC NordStar Airlines.

On the official websites of companies, you can find photos of aircraft and their cabins so that you can consider the place of your future trip.

Do not be upset if you come across a not very good place. It is quite possible to change it to a more convenient one, provided that it is not busy. As soon as the flight attendant closes the door and announces the termination of boarding the airliner, from that moment there are five minutes before takeoff. At this time, it is possible to transfer to another place, if this does not bring discomfort to others.

The Boeing 737-300 is a narrow-body, twin-engine, jet airliner for short and medium air routes manufactured by Boeing Commercial Airplanes. The Boeing 737-300 is the base model of the 737 Classic series aircraft, which, in addition to this model, includes the Boeing 737-400 aircraft with an extended fuselage and the Boeing 737-500 - a version with an increased flight efficiency, but a shortened fuselage.

The Boeing 737-300, although it was created on the basis of the 200th series, retained many of its features, but the changes were visible nonetheless. On the new aircraft, the fuselage was increased by 2.64 meters, due to two additional sections that were placed in front of and behind the main wing. Under the wing, the span of which was also increased, new CFM International CFM56-3B-1 bypass turboprop engines with a takeoff thrust of about 90 kN were installed on the nacelles. Unlike the previous series, most of Boeing 737-300 engines was placed in front of the aircraft wing. The keel of the airliner was also changed. The cockpit and navigation and flight equipment have also been modified. The flight cockpit became more spacious and was equipped with modern EFIS digital avionics.

Boeing 737-300 photo

Now indications of the state of the onboard systems, as well as the necessary flight information, were displayed on four color displays, which were duplicated by electromechanical indicators. The Boeing 737-300 was equipped with an on-board computer that controlled and connected the autopilot and main navigation systems together. On the airliner, it became possible to install a GPS satellite navigation system.

The first test Boeing 737-300 rolled out of the factory in Renton on January 17, 1984. The first flight on it was made on February 24, 1984. Certification for it was received on November 14, 1984. And in the same year, on November 28, the first Boeing 737-300 entered the American airline US Airwas. And in 1985, Boeing Commercial Airplanes received 252 orders for this airliner.

Boeing 737-300 interior photo

Production of the Boeing 737-300 aircraft continued until 1999. In total, more than 1000 of these aircraft were ordered and produced. The last serial airliner of the 300th series with registration number ZK-NGJ was delivered on 17 December 1999 to Air New Zealand. To date, the Boeing 737-300 aircraft continues to be used by many airlines on short and medium air routes with a small passenger flow.

Technical characteristics of the Boeing 737-300 aircraft :

• Boeing 737-300 first flight: February 24, 1984
• Years of production: from 1984 to 1999
• Length: 33.40 m.
• Height: 11.13 m.
• Wingspan: 28.88 m.
• Fuselage width: 3.76 m.
• Empty weight: 32460 kg.
• Wing area: 105.40 sq.m.
• Cruise speed: 780 km/h
• Maximum speed: 876 km/h
• Ceiling: 11300 m.
• Flight range at maximum load: 4204 km.
• Engines: 2 x turbofan CFM International CFM56-3B-1
• Takeoff run: 1950 m.
• Run length: 1400 m.
• Crew: 2 people
• Number of passenger seats: 149 seats in economy class

Boeing 737-300 video

Boeing 737 modifications:

• Boeing 737-100 Cabin capacity up to 99 passengers. The flight range is 3440 kilometers. Cruise speed: 817 km/h. In operation since 10 February 1968 by Lufthansa.
• Boeing 737-200 Cabin capacity up to 130 passengers. The flight range is 4200 kilometers. Cruise speed: 817 km/h. In operation since April 28, 1968 United Airlines.
• Boeing 737-300 Cabin capacity up to 149 passengers. The flight range is 4400 kilometers. Cruise speed: 807 km/h. In service since 7 December 1984 with Southwest Airlines.
• Boeing 737-400 Cabin capacity up to 168 passengers. The flight range is 5000 kilometers. Cruise speed: 807 km/h. In operation since October 1, 1988, Piedmont Airlines.
• Boeing 737-500 Cabin capacity up to 122 passengers. The flight range is 5200 kilometers. Cruise speed: 807 km/h. In operation since March 2, 1990, Southwest Airlines.
• Boeing 737-600 Cabin capacity up to 132 passengers. Range 5648 kilometers flight. Cruise speed: 852 km/h. In operation since 25 October 1998 by SAS.
• Boeing 737-700 Cabin capacity up to 149 passengers. The flight range is 6230 kilometers. Cruise speed: 852 km/h. In operation since January 18, 1998, Southwest Airlines.
• Boeing 737-700ER Cabin capacity up to 180 passengers. The flight range is 10200 kilometers. Cruise speed: 852 km/h. In operation since January 18, 1998, the airline ANA ( All Nippon Airways).
• Boeing 737-800 Cabin capacity up to 189 passengers. The flight range is 5765 kilometers. Cruise speed: 852 km/h. In operation since 31 January 2006 by Hapag-Lloyd.
• Boeing 737-900 Cabin capacity up to 220 passengers. The flight range is 5800 kilometers. Cruise speed: 852 km/h. In operation since May 27, 2001, Alaska Airlines.
• Boeing 737-900ER Cabin capacity up to 220 passengers. The flight range is 5990 kilometers. Cruise speed: 852 km/h. In operation since May 1, 2007, Lion Air.

Boeing 737-500 aircraft cabin layout with 8B + 56E + 48Y layout:

Boeing 737-100 layout of the aircraft cabin with the layout 27B + 49Y:

Represented by 4 aircraft.

Configuration includes 122 passenger seats divided into 3 classes - tourist, economic and business.

Here is the diagram Boeing cabin 737-300, presented on the official website. Let's figure out where the best places for the Boeing 737-300 are, and where it is better not to book.

A couple of general points about the location of the seats in the Boeing 737-300 - their disadvantages and advantages.

1. Seats that are located next to the window have the advantage of being able to look into it during the flight (this, of course, depends on the time of flight and the weather). If you fly at night, this merit does not count. Another neighbor will not bother you if he wants to get up. These places have one drawback - it is not very convenient to leave it yourself. Therefore, if there is no need to go to the toilet often or you intend to oversleep the entire flight, choose seats by the window.

2. The seats, which are located near the aisle, have their own dignity - it is very easy to get up from it, if necessary, to the toilet. The disadvantages are that a neighbor can be disturbed if he needs to get up. Flight attendants with carts and passengers who pass through the cabin to the galley and toilets can also interfere. Therefore, if you are flying with a child and, most likely, you will often have to go to the toilet. Or you yourself have a need to go to the restroom more often, then choose from the edge of the seat.

1-2 p. - places of business. Distance between rows 41 inches (about 105 centimeters). First r. not as comfortable as the second one. The distance to the partition is small and it is not very comfortable to sit the whole flight, resting against the wall.

10 p. - first row economy class. Seats F,E,B,A also inconvenient due to the partition, the distance to which is even less than in the business class. But seats C,D better. The thing is that the wall is slightly shorter in length than the length of the chairs. Therefore, the seats near the aisle of this row have a small amount of free space for the legs. You can also try to stretch your legs into the aisle, if this does not interfere with the flight attendants. Another quite significant advantage of this series. is the fact that no one will recline the back of the chair. In conditions of a small step of the rows, this is important.

16 p .. The backs of the seats do not recline due to the emergency (emergency) exit.

17 rubles. They are considered the best on board in their class. The backs recline freely, and because of the emergency exit, the width of the passage between the rows has been increased. There are, however, a few minor drawbacks. It is forbidden to sit on these places for disabled people, passengers with animals, children, and block hand luggage pass. The usual row spacing for economy class is 76 centimeters (30 inches).

28 p., C, D - proximity to toilets, implies constant walking. They can also step on the foot or touch the elbow.

Last, 29 p. tourist class. This is probably the most uncomfortable places. The backs of the chairs rest against the wall of the toilet - they do not recline and are fixed. People will constantly scurry past you to the toilet and back, and sometimes a semblance of a queue will form. Drinks and food will reach you last. Often, you will not have a choice what to drink.

Ask an Airline Worker for Advice

If possible, carefully study the scheme of the airliner on which you will fly

Do not take seats in which the seats do not recline or are limited in this

Do not take places near toilets, kitchens and other technical rooms in the very tail.

Dear site users!

We hope this article was helpful to you.

If you have ever flown on an airline aircraft in your life, please share your feedback about the flight.

Clear skies to you, as the pilots say, and a soft landing!

Boeing has already hinted that the next big project after the Boeing 787 will be a replacement aircraft for the family. 737 , although it is not entirely clear whether a new design will be developed within the next 7-10 years. However, such an aircraft is today designated as 737RS.

Boeing 737 aircraft families

All aircraft Boeing 737 divided into 3 families: 737 Original(Original), 737 Classic(Classic) and 737 next generation(Next generation, NG).

• Original: 737-100, -200 (manufactured from to )
• Classic: 737-300, -400, -500 (manufactured from to )
• next generation: 737-600, -700, -700ER, -800, -900, -900ER, BBJ, BBJ2 (manufactured with )

The vast majority of aircraft Boeing 737- commercial aircraft families Classic And next generation.

Airlines designate aircraft as follows: Boeing 737-200-B732, Boeing 737-600-B736, Boeing 737-700-B73G, Boeing 737-800- B73H. Aircraft equipped with vertical wingtips ( English - winglets), are referred to as 737W or 739W. For the most part, designations of aircraft modifications symbolize the length of the fuselage, although there are only 9 designations, and 6 variants of the fuselage. They are distributed as follows (in ascending length): 1) -100; 2) -200, -500, -600; 3) -300, -700; 4) -400; 5) -800; 6) -900.

Family 737 Original (-100/-200)

Family aircraft 737 Original quickly lost their popularity due to fuel inefficiency, high noise levels (despite the installation of silencers on engines) and expensive service. Most aircraft 737-200 operated by airlines of developing countries, mainly African. Option 737-100 not used at all. Aircraft 737 Original originally had a cockpit for two pilots - a significant change from the Boeing 727, which required a flight engineer, which subsequently became the standard for passenger aircraft.

737-100

Boeing 737-200 Sakhalin Airways

Boeing 737-100 is the first type of aircraft Boeing 737. Of the more than 5 thousand built aircraft Boeing 737 this model was represented by only thirty copies. By 2007, not a single aircraft of this model remained in airworthy condition.

737-200

Boeing 737-200 is an elongated version specially for the American market 737-100 . The first customer was the American United Airlines. Boeing 737-200С could be converted from passenger to cargo-passenger or cargo. 737-200QC- modification 737-200C, only allowing you to very quickly repurpose the aircraft cabin. Serial production began in 1967.

737-200 in 1971 was developed to 737-200 Advanced(advanced), which became the standard option. This option could also be made in modifications -200С And -200QC. In addition, there were options 737-200 Executive Jet And 737-200HGW(High Gross Weight).

737 Classic family (-300/-400/-500)

The original 737-100 and -200 became increasingly obsolete and unprofitable over time and outperformed the DC-9 family, although engines and avionics were improved.

737-900/-900ER

For more successful competition with Airbus, a model was developed Boeing 737-900- the longest aircraft of the family. But the number of doors has not been increased, as required by the Federal Aviation Administration. Therefore, the passenger capacity of the aircraft was significantly reduced not so much due to design flaws, but because of the laws. After the completion of production of the 757th, a new aircraft was introduced - Boeing 737-900ER, equipped with additional tanks and doors. Advanced wing design ensures low fuel consumption per cruising speed 0.78 Max. The first customers are Alaska Airlines (737-900) and Lion Air (737-900ER). Based on the aircraft, a variant was developed BBJ3.

The main competitor is A321, Although Boeing 737-900 noticeably less.

Military options

There are several types of military aircraft based on the civilian Boeing 737 for special purposes.

• T-43 - Boeing 737-200, used for navigator training in the United States Air Force. Some of these aircraft were converted to ST-43 to transport people.
• SLAMMR- a naval reconnaissance aircraft, or a transport aircraft equipped with a multifunctional airborne radar. 3 of these aircraft were sold to the Indonesian Air Force.
• C-40 Clipper- developed on the basis 737-700C replacement for C-9 Skytrain II. The C-40B and C-40C are used by the US Air Force to transport high-ranking military officials.
• Project Wedge Tail- long-range radar patrol aircraft based on Boeing 737-700IGW. It is noteworthy that the first customer for the aircraft was the Australian Air Force. In addition, orders are expected from Turkey, South Korea and Italy.
• P-8- a multifunctional aircraft for naval aviation, developed on the basis of 737-800ERX, designed to replace the already obsolete legendary Cold War anti-submarine aircraft P-3 Orion. At least 100 orders are expected, primarily from the US Navy. Possible orders from NATO countries. The aircraft is unique in that its wings are crowned with curved, like the Boeing 767-400, inside the wingtips, and not vertical, like the Boeing 737-800.

Specifications

Aircraft engine CFMI CFM56-7B

• Wingspan: from 28.3 m to 34.3 m (36 m for aircraft with vertical wingtips)
• Length:
  • 28.64 m (-100)
  • 30.53 m (-200)
  • 33.4 m (-300)
  • 36.45 m (-400)
  • 31.01 m (-500)
  • 31.2 m (-600)
  • 33.6 m (-700, -700ER)
  • 39.5 m (-800)
  • 42.1 m (-900, -900ER)
• Keel Height:
  • 12.6 m (-600)
  • 12.5 m (-700, -800, -900, -900ER)
• Maximum passenger compartment width:
  • 3.5 m (all models)
• Engines:
  • Pratt & Whitney JT8D (-100, -200)
  • CFMI CFM56-3 (-300, -400, -500)
  • CFMI CFM56-7 (-600, -700, -800, -900, -900ER)
• Maximum takeoff weight:
  • 65,090 kg (600)
  • 79,010 kg (-700, -800, -900)
• Passenger capacity:
  • from 85 to 215 passengers
• Price ( US dollars ): from $47 million to $80 million in 2006 prices.

Equipment, systems and engines

Air conditioning/pneumatic system

Air is taken from engines and APU. The air is used for cabin air conditioning, equipment cooling, engine and wing anti-icing and engine starting. The air conditioning system (SCR) has two channels and can also use the air from the passenger compartment for recirculation.

On airplanes 737-300 , -500 , -600 And -700 SLE is similar 737 Original. On airplanes 737-400 , -800 And -900 SLE is very different from the rest, which is caused by the increased volume of the cabin. "Long" aircraft have two cabin temperature zones, more developed system temperature control.

Power supply system

The primary power supply system is an alternating current system with a voltage of 115 V and a frequency of 400 Hz. On aircraft types 737 Original And 737 Classic The sources of electric power are two motor synchronous alternators with a constant speed drive and an APU generator. Power generators 40 KVA. Synchronous operation is not provided. The secondary is a 28 V DC system, the energy sources of which are three rectifiers and a battery. Optional on aircraft 737 Classic on motors, instead of synchronous generators, variable speed/constant frequency generators can be installed.

On airplanes NG the power supply system has been slightly modified compared to 737 Classic: the power distribution system was changed, a battery was added to start the APU and new generators were installed, combined with a constant speed drive Integrated Drive Generator (IDG) with a capacity of 90 KVA. The electric control panel has a digital indicator instead of pointers.

flight control system

By plane Boeing 737 the primary flight control system with cable rods and duplicated booster control was used with the transition to non-booster control. Control is made by ailerons, elevators and rudders. The rudder is controlled by the main or backup (emergency) drives, without the possibility of manual control.

The secondary flight control system is represented by slats of two designs: Slat- three sections external from the pylon, and Leadin Edge Flap(Kruger slats) - two internal sections. Flaps - three-slot, two-section. Five sections of spoilers are used together with the ailerons and as air brakes and are divided into flight spoilers (Flight Spoilers), which always work, and ground (Ground Spoilers), which work only by compressing the right landing gear.

The aircraft also has a variable stabilizer.

On aircraft like NG in the secondary system, new double-slotted flaps were used, one section of slats and spoilers was added (due to the wing lengthening by 5.5 meters).

Fuel system

Three fuel tanks are located in the wing and center section: wing and central. The central one is developed first, then the wing ones. Each tank has two fuel pumps. General maximum capacity family aircraft tanks 737 Original from 12700 to 15600 kg, depending on modification.

On planes of the family 737 Classic, the capacity of the tanks has been increased to 16200 kg, it is also possible to install an additional fuel tank in the rear trunk.

In general, similar 737NG, tank capacity increased to 20800 kg, changed fuel tanks: the central tank occupies not only the center section, but also part of the wing from the root to the engine pylon. The location of the pumps has also changed and a system for removing water from the tanks has been added.

On planes BBJ it is possible to install up to 9 additional fuel tanks in the luggage compartments, increasing the capacity to 37712 kg.

Hydraulic system

Boeing 737-500 landing gear niche, forward bulkhead. Components of the hydraulic system and flight control system

On airplanes Boeing 737 There are three hydraulic systems: A, B(basic) and Standby(backup). On 737-100 And -200 system A is powered by two motor pumps, and the system B- from two electric pumps. The backup system is battery powered and supplies only the slats, rudder and reverse. Most of the hydraulic components are located in the chassis recess.

Aircraft hydraulic system 737 Classic And 737NG very different from 737 Original. Energy consumers are redistributed in it and each of the main systems is operated by one motor and one electric hydraulic pump.

Chassis

By plane Boeing 737 the classic scheme of a three-bearing chassis with a front steering rack was used. Each landing gear has two wheels. The main pillars are retracted into the landing gear niche, located in the center section and not having flaps, so the wheels become aerodynamic surfaces. This minimizes the number of hydraulic components of the chassis system, but worsens the aerodynamics.

In connection with the use of 737 Classic motors with a large strut radius are made higher than on 737 Original, and also enhanced to varying degrees, depending on takeoff weight different types (-300, -400 or -500).

On airplanes 737NG landing gear redesigned, higher than on 737 Classic and also reinforced depending on the takeoff weight. Since 2008 on aircraft 737NG it became possible to install new carbon brakes, which have a lower mass and a longer resource.

Avionics

Original

On generation aircraft 737 Original an analog avionics complex with duplication of systems and electromechanical indication was installed.

Classis

Electrical equipment compartment Boeing 737-500, shelf E1

Boeing 737-300 received a digital avionics complex Flight Management System (FMS), corresponding to the Boeing 767 -200/-300 and Boeing 757 -200/-300 standards, is only simplified and with a lesser degree of redundancy. Flight Management System consists of five main systems:

• inertial navigation system Inertial Reference System (IRS), including two inertial blocks Inertial Reference Unit (IRU) and switching equipment. Digital air signal system Digital Air Data Computer (DADC), which includes two computers, is also sometimes included in the documentation in the IRS.

• Electronic indication system Electronic Flight Instrument System (EFIS) by Collins, including two character generators Symbol Generator (SG) and two CRT indicators each: a complex flight indicator Electronic Attitude Director Indicator (EADI) and horizontal situation indicator Electronic Horizontal Situation Indicator (EHSI), as well as two display control panels and switching equipment.

• System automatic control flight Digital Flight Control System (DFCS). This system is functionally divided into the actual automatic control system Automatic Flight Control System (AFCS) and director management system Digital Flight Director System (DFDS) and has two channels Channel A And Cannel B. Part DFCS includes two flight control computers flight control computer (FCC), mode control panel Mode Control Panel (MCP) and two pairs of hydraulic drives of the autopilot (two in the longitudinal and lateral channels) acting on the input rods of the aileron boosters and elevators, as well as many different sensors.

• automatic traction autothrottle (A/T), having its own computer or included in the FCC A and actuators acting on the motor control wiring cables.

• Flight control computer system Flight Management Computer System (FMCS) including the Flight Management Computer ( FMC) and two multifunctional control panels Control and Display Unit (CDU). This system integrates the entire complex FMS, is an aircraft navigation computer system, performs built-in control and allows you to perform tests of the above systems Build-In Test Equipment (BITE). Until 2012, all aircraft 737 Classic must be retrofitted with a second FMC in connection with the transition to the performance of flights on 737 Classic, equipped with EFIS, include both electronic and pointer indicators. The displays are located in front of the pilots in the "Base T" vertical: EADI above, EHSI from below. The first planes 737-300 were produced in the "Non-EFIS" version, having electromechanical indicators instead of electronic ones. To indicate the operation of the power plant, two combined indicators are installed on the central panel Engine Instrument System (EIS): Primary And secondary, in which pointer devices are presented in the form of segmented LED indicators. There are also cab options in which the indication of the power plant is represented by conventional pointer instruments - the "Non-EIS" variant.

  The equipment allows landing in ICAO CAT IIIA weather conditions.

  next generation

  

  Boeing 737-800 cockpit

  Aircraft avionics complex architecture 737 Next Generation pretty much the same 737 Classic. The main difference is the use of the display complex common display system (CDS) development Boeing 777. CDS includes two calculators Display Electronic Unit (DEU), six LCD indicators Display unit (DU), two control panels and switching equipment. The indication can be transferred from one display to another. In addition to the main purpose - creating an indication, CDS is the central interface system. CDS can also be supplemented with a collimator indicator (indicator on the windshield) - head-up display (HUD).

  Another difference is the integration of the inertial navigation system and the air signal system into one system - Air Data and Inertial Reference System (ADIRS), consisting of two blocks Air Data and Inertial Reference Unit (ADIRU).