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Ethiopian Airlines 302

Printed page 17. PDF page 17.

system began deviating from the corresponding right side values. The left and right recorded AOA values began deviating. Left AOA decreased to 11.1� then increased to 35.7� while the right AOA indicated 14.94�. Then after, the left AOA Stabilizer trim
Open final report at PDF page 17Aircraft Accident Investigation Report B737 MAX 8, ET-AVJ

Ethiopian Airlines 302

Printed page 21. PDF page 21.

director roll mode changed to LNAV. At 05:38:44, shortly after liftoff, the left and right recorded AOA values began deviating. Left AOA decreased to 11.1� then increased to 35.7� while value of right AOA indicated 14.94� (point "A" in Figure
Open final report at PDF page 21Aircraft Accident Investigation Report B737 MAX 8, ET-AVJ

Ethiopian Airlines 302

Printed page 247. PDF page 247.

Report B737- MAX 8, ET-AVJ December 2022 8. Shortly after liftoff, the left and right recorded AOA values deviated. The left AOA values were erroneous and reached 74.5� while the right AOA reached a Maximum value of 15.3�.The difference between
Open final report at PDF page 247Aircraft Accident Investigation Report B737 MAX 8, ET-AVJ

Ethiopian Airlines 302

Official web page.

system began deviating from the corresponding right side values. The left and right recorded AOA values began deviating. Left AOA decreased to 11.1° then increased to 35.7° while the right AOA indicated 14.94°. Then after, the left AOA valuereached 74.5°
Open the official web pageBEA published observations on the Ethiopian report

Ethiopian Airlines 302

Printed page 126. PDF page 126.

revolutions, i.e., 80% more. 1.16.3 Angle of Attack, AOA Values At 5 h 38 min 44 s, the LH AOA recorded values began drifting from the RH AOA recorded values; before that time, no clue of concern existed on the
Open final report at PDF page 126Aircraft Accident Investigation Report B737 MAX 8, ET-AVJ

Ethiopian Airlines 302

Printed page 127. PDF page 127.

Although the FDR does not separately record both resolvers within the LH AOA sensor, recorded ADIRU and SMYD parameters are consistent with both resolvers providing the same erroneous values. Therefore, the investigation concluded that the failure impacted the signals p
Open final report at PDF page 127Aircraft Accident Investigation Report B737 MAX 8, ET-AVJ