A week after Lion Air flight JT-610 (registration code PK-LQP) crashed into the Tanjung Karawang sea on October 29, 2018, the National Transportation Safety Committee (KNKT) announced a suspicion that the crash was caused by damage to the Angle of Attack (AOA) sensor component. In response to that, the Boeing Company issued a Flight Crew Operations Manual Bulletin with an intriguing subject: “Uncommanded Nose Down Stabilizer Trim Due To Erronous Angle of Attack (AOA) During Manual Flight Only”. The series of events prompted H. Irianto, father of Rio Nanda Pratama, one of the victims in the tragedy, to file a lawsuit against the Boeing Company, on November 14, 2018.

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