Semantron 23 Summer 2023

The Boeing 737 Max crisis

Fig 12: Baker, M., et al. (June 22, 2019), ‘The inside story of MCAS: How Boeing’s 737 MAX system gained power and lost safeguards’. Seattle Times . https://www.seattletimes.com/seattle-news/times-watchdog/the-inside-story- of-mcas-how-boeings-737-max-system-gained-power-and-lost-safeguards/. Consulted March 2, 2022. Fig 13: Satcom Guru, Trim Cutout with Severe Out-of-Trim Stabilizer can be difficult to recover . https://www.satcom.guru/2019/04/stabilizer-trim-loads-and-range.html. Consulted March 2, 2022. Fig 14: Petchenik, I. (April 28, 2021), ‘Flightradar24 Data Regarding Lion Air Flight JT610’. Flightradar24. https://www.flightradar24.com/blog/flightradar24-data-regarding-lion-air-flight-jt610/. Consulted March 25, 2022. Fig 15: Petchenik, I. (March 4, 2021), ‘Flightradar24 Data Regarding Ethiopian Airlines Flight 302’. Flightradar24. https://www.flightradar24.com/blog/flightradar24-data-regarding-the-crash-of-ethiopian-airlines-flight- 302/. Consulted March 25, 2022. Fig 16: Mitch B., Boeing 737MAX Parking Lot 0974 . https://imagewerx.us/product/737max-parking-lot-0974/. Consulted April 7, 2022. Fig 17: 737ng.co.uk, 737 Quick Reference Handbook . https://www.737ng.co.uk/737- 800%20Quick%20Reference%20Handbook%20(QRH).pdf. Consulted April 7, 2022. Fig 18 Ostrower, J. (November 7, 2018), ‘Boeing issues 737 Max fleet bulletin on AoA warning after Lion Air crash’. The Air Current . https://theaircurrent.com/aviation-safety/boeing-nearing-737-max-fleet-bulletin-on-aoa- warning-after-lion-air-crash/. Consulted April 7, 2022 . Fig 19: The Committee on Transportation and Infrastructure, Hearing Before the Committee on Transportation and Infrastructure, House of Representatives, One Hundred Sixteenth Congress, First Session . https://www.govinfo.gov/content/pkg/CHRG-116hhrg38282/pdf/CHRG-116hhrg38282.pdf. Consulted April 8, 2022. Fig 20: Pilot Blog, Is it SAFE to Fly on New Boeing 737 MAX? Boeing Pilot opinion . https://www.youtube.com/watch?v=_oewOh_o-9g&t=692s. Consulted March 23, 2022. Fig 21: SKYbrary, Angle of Attack (AOA) . https://skybrary.aero/articles/angle-attack-aoa. Consulted March 25, 2022. Fig 22: Flaps 2 Approach, Captain-side Yoke . https://www.flaps2approach.com/project-gallery/oem-yokes-columns- boeing-737-500/17010986. Consulted March 25, 2022. Fig 23: avstop.com, Bernoulli’s Principle . http://avstop.com/ac/apgeneral/bernoulli%27sprinciple.html. Consulted March 25, 2022. Fig 24: Flaps 2 Approach, Throttle Quadrant Rebuild – Four Speed Stab Trim and Stab Trim Indicator Tabs . https://www.flaps2approach.com/journal/2015/7/19/throttle-quadrant-rebuild-four-speed-stab-trim-and- stab-trim.html. Consulted March 25, 2022. Fig 25: Satcom Guru, Trim Cutout with Severe Out-of-Trim Stabilizer can be difficult to recover . https://www.satcom.guru/2019/04/stabilizer-trim-loads-and-range.html. Consulted March 2, 2022. Fig 26: Sturges, D., ER-ECB . https://www.airteamimages.com/embraer-erj-190_ER-ECB_air-moldova_142006.html. Consulted April 8, 2022. Fig 27: Flaps 2 Approach, Flight Path Vector (FPV) – Explanation and Use . https://www.flaps2approach.com/journal/2012/7/7/flight-path-vector-fpv-explanation-and-use.html. Consulted March 25, 2022. Note: Figures 28 and 29 were created by me.

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