[1]HE BOEING 737 TECHNICAL SITE

http://www.b737.org.uk/sales.htm

[2]中国东航：中国东方航空股份有限公司2022年2月运营数据公告

https://pdf.dfcfw.com/pdf/H2_AN202203151552783919_1.pdf?1647360892000.pdf

[3]中国南方航空股份有限公司2022年2月主要运营数据公告

http://file.finance.sina.com.cn/211.154.219.97:9494/MRGG/CNSESH_STOCK/2022/2022-3/2022-03-16/7886592.PDF

[4]海南航空控股股份有限公司 2021 年半年度报告

https://pdf.dfcfw.com/pdf/H2_AN202108311513469003_1.pdf?1630426218000.pdf

[5]中国国航：中国国际航空股份有限公司2021年半年度报告

http://quotes.money.163.com/f10/ggmx_601111_7499482.html

[6] 波音公司 · 商业喷气式飞机事故统计摘要（1959-2020）

(STATISTICAL SUMMARY OF COMMERCIAL JET AIRPLANE ACCIDENTS, 1959-2020)https://www.boeing.com/resources/boeingdotcom/company/about_bca/pdf/statsum.pdf

[7] Boeing Reports Record 2018 Results and Provides 2019 Guidance: https://investors.boeing.com/investors/investor-news/press-release-details/2019/Boeing-Reports-Record-2018-Results-and-Provides-2019-Guidance/default.aspx

[8] How Boeing’s 737MAX system gained power and lost safeguards.

https://www.seattletimes.com/seattle-news/times-watchdog/the-inside-story-of-mcas-how-boeings-737-max-system-gained-power-and-lost-safeguards/

[9]The Seattle Times · The inside story of MCAS: How Boeing’s 737 MAX system gained power and lost safeguards: Aviation Accident Database · Boeing 737-8 MAX: https://aviation-safety.net/database/types/Boeing-737-8-MAX/index

[10]Aside from Lion Air, these are all the airlines that have Boeing 737 Max planes

https://qz.com/1464936/beside-lion-air-these-airlines-have-boeing-737-max-planes/

[11]Why the Boeing 737-800 Is The Most Popular 737 Model

https://simpleflying.com/boeing-737-800-most-popular/

[12]中国新闻网: 中国民航近十年来安全水平高于世界民航平均水平

https://www.chinanews.com.cn/gn/2017/05-16/8225672.shtml