This is the 1717th most frequent Russian word.
возможна
"Possible."
In this context, 'возможна' indicates that something (the trip) is feasible or can occur under certain conditions.
Поездка возможна, если погода будет хорошей.
The trip is possible if the weather is good.
Here, 'возможна' expresses the probability or likelihood of an event (an error).
Возможна ошибка в расчетах.
An error in calculations is possible.
In this usage, 'возможна' demonstrates that a situation can exist or has been made feasible due to certain factors (efforts).