string_to_state.put("main", ao_flight_main);
string_to_state.put("landed", ao_flight_landed);
string_to_state.put("invalid", ao_flight_invalid);
string_to_state.put("main", ao_flight_main);
string_to_state.put("landed", ao_flight_landed);
string_to_state.put("invalid", ao_flight_invalid);