737 model data
737 model is a twin-engine medium and short-range aircraft announced by Boeing at the end of 1958. As of today, Boeing has manufactured a total of 4 generations of 737 models, delivering more than 10,000 737 aircraft in total, and the total order for 737 is also more than 15,000. Here are some data:
- On average, every 1.5 seconds a 737 aircraft takes off
- At any time, there will always be 500,000 passengers flying in the air on 2,900 737 aircraft
- More than 18.4 billion passengers have taken 737 aircraft
- 737 has flew more than 119 billion kilometers, a total of 189 million flights and 275 million flight hours, equivalent to one aircraft flying uninterrupted for 31,400 consecutive years. 5
737 model
Boeing's 737 model is divided into 4 generations:
- The first generation: 737 original model (737OG), the specific models are 737-100, 737-200, and the Pratt & Whitney JT8D engine
- second generation: 737 classic (737CL), the specific models are 737-300, 737-400, 737-500. Use CFM56-3 engine
- 3rd generation: 737 new generation (737NG), specific models are 737-600, 737-700, 737-800, 737-900, CFM56-7 engine
- 4th generation: 737MAX, specific models are 737-7, 737-8, 737-8200, 737-9, 737-10, using CFM LEAP-1B engine
- , the first generation 737 original model was designed in 1958, and its first flight was on April 9, 1967, and it was discontinued in 1988. A total of about 1,144 aircraft were manufactured, most of which have been retired, and some airlines were used as cargo planes.
- second-generation 737 classic, was designed in 1981, its first flight was on February 24, 1984, and it was discontinued in 2000. It has been manufactured in total about 1990 plus. At present, many aircraft are still flying, mainly cargo planes.
- The third generation 737 new generation was launched in 1993. Its first flight was on February 9, 1997 and was discontinued in 2020. A total of about 6,779 aircraft have been manufactured, which is currently the main 737 models, of which the most 737-800 are manufactured, with a total of 4,989 aircraft.
- The fourth generation 737MAX was announced to be launched in 2011 and its first flight was on January 29, 2016. It is currently the only 737 model in production by Boeing.
- 737 and some niche derivative models are not written here.
737 Black box
The black box usually mentioned includes a voice recorder and a flight data recorder on the plane. The black box is orange, not black, which is convenient for searching.
Cockpit Voice Recorder (CVR)
Cockpit Voice Recorder can record the headphones, microphones and sounds in the cockpit environment on all 3 audio control panels in different channels. The recorder is located in the rear cargo hold. The recorder starts with the first engine oil pressure rise, and uses a continuous cycle of 120 or 30 minutes until the last engine is turned off five minutes later.
Flight Data Logger
Flight Data Logger (FDR) is located above the ceiling of the rear kitchen. There have been multiple models of FDR models in the history of 737. The parameters they collected ranged from 8 to hundreds, and lasted from 30 minutes to hundreds of hours. Most FDRs start recording the moment the engine oil pressure appears.
Later digital FDR (latest -200 and classic) uses 1/4 inch wide, 450-foot long tape to record data. The latest solid-state FDR (latest classic and NG series) saves recorded data in a memory chip.
late FDR of 737-3/4/500 can record 25 hours of data. Its protective box includes an aluminum inner shell, a constant temperature protective shell, a stainless steel shell and an outer stainless steel dust cover. This allows it to withstand 20,000 pounds of crushing pressure in each axial direction and provides 1000G 5 millisecond impact protection.The constant temperature protective case can keep its core components at a safe temperature. It also has an underwater positioning device that can continuously send signals underwater for at least 30 days. The FDR of
737NG is similar to the above description, but it withstands a shock of 3400g, a water pressure of 20,000 feet deep and a high temperature of 1100°C for 30 minutes.
737 Security
737 aircraft has been tested for 60 years and is indeed a model with high safety. Especially for the 737NG aircraft, the safety is still very good.
In addition to the early 737 models, there were rudder design problems and the latest MCAS problems on the 737MAX, the 737 has almost no design defects.
So in the entire career of 737, there were only more than 100 accidents of damage to the entire machine. Compared with more than 10,000 aircraft with a flight time of 60 years, this number ratio is very small.
737NG aircraft accidents and causes
737 other series of aircraft accidents will not be listed here, only 737NG accidents around the world are listed here.
737NG series aircraft include 737-600, 737-700, 737-800, 737-900, etc. Because they belong to the same series, they are all listed. All 737NGs have had 19 accidents in total (it should be 20), only one is 737-700, and the rest are 737-800 models, which mainly corresponds to the number of aircraft manufactured. For example, the 737-600 model has built a total of 69 aircraft, and there are only 1,000 aircraft of 737-700.
has produced nearly 5,000 737-800 models and is used frequently. In other words, the accident rate is very, very low at present, so many airlines are currently operating this model every day.
- September 30, 2006; PR-GTD (aircraft registration number), 737-800SFP, 34653/2039 (production line number), first flight on August 22, 2006, GOL (airline); Brazil : (place of occurrence)
- The 737 aircraft collided with an Embraer "Legacy" business aircraft at an altitude of 37,000 feet on its way from Manaus to Brasilia . The Legsey plane landed safely, but all 149 passengers and six crew members on the 737 were killed. The 737-800SFP aircraft has just been delivered for 18 days and has only been flying for 234 hours. The initial report argued that ATC mistakenly thought Legacy was flying at the FL360 altitude (the correct altitude layer that should be equipped in the direction of flight). Preliminary investigation results show that for reasons that are not yet clear, the TCAS system of Legsey aircraft did not work when the accident occurred, so the system was unable to detect air conflicts or be detected by other aircraft. In addition, CVR data shows that the Legacy flight crew did not know that the TCAS system was not working until the accident occurred.
- May 5, 2007; 5Y-KYA, 737-800, 35069/2079, its first flight on October 9, 2006, Douala , Cameroon :
- crew has delayed its flight by one hour in order to wait for the thunderstorm to pass through. The plane took off from Douala Airport, Cameroon at 00:05 local time in thunderstorm. The captain at a height of 1500 feet required the autopilot to be turned on but the command was not executed. The plane slowly rolled to the right, and the slope angle had reached 35 degrees when the crew discovered it. The crew operates the aircraft to continue rolling to the right and pulling the disc backward. The plane reached a right slope of 118 degrees when it touched the ground, with a 48 degrees upwards and an overload of 3.75g. The investigation found that the crew did not find that the autopilot was not turned on and then lost the sense of orientation. All 114 passengers and crew members on board were killed.
- August 20, 2007; B-18616, 737-800, 30175/1182, its first flight on July 11, 2002, China Airlines, Okinawa, Japan: The
- aircraft caught fire and damaged shortly after it stopped. The accident occurred when a screw of the stop under the slat guide fell off and broke through the fuel tank near the No. 1 engine. According to JTSB, the washer used to fasten the nut position fell off during the repair work done 6 weeks before the accident. After the accident, the manufacturer modified the design of nut to prevent similar falloff. All 157 passengers and crew members on board were evacuated safely, causing no deaths.
- February 25, 2009; TC-JGE, 737-800, 29789/1065, its first flight on January 24, 2002, Turkish Airlines ; Amsterdam, Netherlands :
- Airplane was incorrect when performing the 18R runway coupled blind landing approach. The crew did not notice that the automatic throttle placed the throttle handle in the slow position according to the automatic landing method. After 1 minute and 40 seconds, the shaking rod starts to alert at 100 knots, and the co-pilot starts to perform the recovery procedure; the captain takes over the control but does not notice that the automatic throttle retracts the throttle handle to the slow train again. The tail of the aircraft first touched the ground and broke into three parts. Nine out of 134 people on board were killed.
- December 22, 2009; N977AN, 737-800W, 29550/1019, first flight on November 30, 2001, American Airlines ; Kingston, Jamaica :
- unit approached Runway 12 under thunderstorm and 14 tailwind conditions (Horse 30 does not provide ILS approach). The plane grounded at 4100 feet of the 8900-foot runway and bounced. The plane rushed out of the runway end at 62 knots and parked on a beach. The aircraft body cracked, the engine on the right was damaged by impact, and the left landing gear broke. No casualties were caused.
- 25 Jan January 25, 2010; ET-ANB, 737-800W, 29935/1061, its first flight on January 18, 2002, Ethiopian Airlines ; Beirut , Lebanon :
- The aircraft entered a turn and climbed after taking off at night, and began to descend at an altitude of 9,000 feet and fell into Mediterranean . All 8 crew members and 82 passengers were killed.
- May 22, 2010, VT-AXV, 737-800W, 36333/2481, its first flight on December 20, 2007, Air India Express; Mangalore, India:
- The plane rushed out of the runway and fell into a deep valley when it landed. 158 of the 166 crew members were killed.
- July 30, 2011, 9Y-PBM, 737-800, 29635/2326, its first flight on July 6, 2007, Caribbean Airlines ; Georgetown , Guyana :
- The aircraft rushed out of Runway 06 (2270 meters) when landing in the rain, penetrated the outer fence of the airport, rushed onto an outer highway, and broke. The front fuselage of the aircraft was separated from the fuselage in front of the wing root. Two of the 162 people on board were seriously injured and no one died.
- October 14, 2012, TC-TJK, 737-800, 35794/2794, First flight on April 29, 2009, Corendon Airlines, Antalya, Turkey:
- The cockpit caught fire and burned the plane when it was pushed out from the gate. There were 189 passengers and 7 crew members on board; 27 passengers were reportedly taken to the hospital for treatment, of which 2 were seriously injured during emergency evacuation.
- April 13, 2013, PK-LKS, 737-800, 38728/4350, first flight on February 5, 2013, Lion Air; Bali , Indonesia:
- The aircraft descended below the minimum altitude when performing a non-precision approach in the rain and crashed outside the runway. No deaths were caused by the accident.
- July 22, 2013, N753SW, 737-700, 29848/400, first flight on October 6, 1999, Southwest Airlines, New York- LaGuardia Airport , United States:
- crew decided to carry out approach by the co-pilot, and when the plane descended below 400 feet, the captain took over and steered the plane to land. At grounding, the space speed is about 133 knots and the aircraft has a pitch angle of about -3 degrees, causing the front wheel to be grounded first. The front landing gear breaks backward and inserts upward into the fuselage, causing damage to the electronics compartment. Before stopping, the plane skated 2175 feet before running 04 and deviated from the runway to the right, causing damage to the outside of the plane. The initial inspection of the front landing gear found that the cause of the front wheel failure was from stress overload. The possible cause of the accident was: "The captain tried to change the aircraft from unstable approaches at low altitudes in a way that took over control, rather than performing a go-around. The main reason for the accident was that the captain did not perform standard operating procedures.”
- March 19, 2016 - A6- FDN, 737-800, 40241/ 3517, the first flight on December 21, 2010, FIyDuba i, Rostov On Don, Russia,
- aircraft returned to flight from thousands of bad weather after approaching Rost ov On Don, then entered and waited, and approached again 2 hours later. The aircraft resumed flight again after a second approach, and later crashed at 00:43 at the World Coordination Time, and all 62 people on board died. The preliminary report shows that :
- -The unit normally retracts the flap to 15 degrees
- -At 1900 feet, the front push of the rod causes the speed to increase to 200kts, and the flap will automatically receive 10 degrees from 15 degrees (SPF aircraft characteristics)
- -The throttle is retracted for 3 seconds, causing deceleration and the flap to 15 degrees
- -The unit selects TOGA thrust
- -The driving rod pulls back for a short time to form 3150f pm0 6mps) climb rate
- -At 2950 feet (900m), Push the rod forward and the stable face downward for 12 seconds, these two actions lead to - lg The dive hit the ground.
- January 13, 2018, 737-800, TC-CPF, 40879/4267, the first flight on November 15, 2012, Pegasus Airlines, Turkey,
- deviated from runway 11 when landing in the rain. The plane deviated from the left at 2400 meters of the runway, rushed down a steep hillside, and stopped on the half slope near the sea. The plane was scrapped, but fortunately no one died.
- September 28, 2018, 737-800, P2-PXE, 33024/1688, the first flight in April 2005, Air Niugini, Chuuk, Micronesia
- 04 approached in the rain when the plane entered the water 150 meters in front of the runway head.
- May 3, 2019 737-800, N732MA, 30618/830, first flight at 12/4/2001, Miami Airlines, Jacksonville, Florida
- plane rushed out of the runway while landing at the Naval Air Station (KNIP), Florida (KNIP) in thunderstorms and tailwinds. The plane stopped in shallow waters of the St. John River at about 380 meters (1250 feet) at the end of the runway. The plane was partially submerged. No one died, but 22 people were taken to the hospital with minor injuries.
- November 21, 2019 - 737-800, TC-JGZ, 35739/2654, first flight on 6/2008, Turkish Airlines, Ukraine, Odessa
- Captain (5608-hour model) landed on runway 16 in crosswind. Wind direction 090/22G30Kt. Due to unstable approach, the crew returned to flight from the first approach, waiting for the weather to improve.
- On the second approach, the plane deviated from the left side of the center line of the runway when landing 6 degrees, and then left after landing. At 130kts, PF used the right rudder and front wheel steering, causing the front wheel to turn right 78 degrees, causing the plane to skid and tires to fail. The plane slipped out of the runway side and the front wheel broke. No passengers or crew were injured, but the plane was completely destroyed.
- January 8, 2020 737-800, UR-PSR, 38124/5977, first flight 21/6/2016, Ukrainian Airlines, Tehran, Iran,
- aircraft was mistakenly shot down by the Sam missile of Iran, Iran, a few minutes after taking off from Tehran Airport. All 176 people on board were killed.
- February 5, 2020 737-800, TC-IZK, 37742/2796, first flight on On January 23, 2009, Pegasus Airlines, Turkey, Istanbul
- approached in a thunderstorm and a strong tailwind. The plane's grounding distance was long, and it rushed out of the runway, hit the wall, fell down the embankment, and broke into three parts. 183 people were injured and 3 people were killed.
- August 7, 2020 737-800, VT-AXH, 36323/2108, 13.7 years of age, Air India Express, Kozikode, India,
- entered the field in rainy days and tailwinds. The plane's grounding distance was long, and it rushed out of the runway and fell into the valley, breaking into two pieces. 18 people were killed.
The above data comes from "Proficient in Boeing 737"