Hi Gobona,
The text is not accurate.
Gomes pointed to one serious anomaly in the preliminary report. It said that the altitude selector was manually altered three times, bringing the plane's altitude down from 38,000 feet to 592 feet below ground level. But if an altitude below ground level is fed into the Embraer automatic pilot, it does not accept it.
This part is not true. Zero to 41.000ft is selectable on the ALT SEL window. If he selects zero and local alt is 592ft, here goes this text down the drain...