In fact after the MCAS was disabled the pilots only manually trimmed the plane just once for the whole journey. They did so by throwing the two Stab Trim Cutout switches and completed the rest of the journey by flying the plane manually. The day earlier the JT043 pilots on the same plane fought with MCAS for about 6 minutes too but survived. They could not over-trim the plane to get out the difficulties as the plane would gain altitude when it was supposed on their way back to the airport. ![]() The JT610 pilots fought about 7.5 minutes with MCAS and failed. The plane was successfully flying an average 5 pitch trim units except for the last four MCAS nose down commands which drove the plane into the Java sea. It seems the Indonesian pilots were attempting to fly the plane at 5 pitch trim units a value the same plane flew successfully the day earlier to its destination to about 25,000ft.Īfter the flap was retracted for the second time there were 25 cycles the JT610 pilots used the power-assisted trim, which I believe was from the switch at the column yoke, to cancel the nose down actions from MCAS. I superimposed some lines over the MCAS events in doomed JT610. ![]() I have been trying to find out why the Indonesian 737 Max survived in the flight JT043 the day earlier but not the later flight JT610.
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