Complex sentence: Bhanot and the other attendants under her charge hid the passports of the 41 Americans on board; some under a seat and the rest down a rubbish chute so that the hijackers could not differentiate between American and Non-American citizens.
Split into simpler sentences: Bhanot and the other attendants under her charge hid the passports of the 41 Americans on board; some under a seat and the rest down a rubbish chute. She hid the passports of the passengers on the flight so that the hijackers could not differentiate between American and Non-American citizens.