Tell me about a time when you made a mistake surveying, what happened and how did you correct it?

We are all human and the interviewer is looking to see how you've handled past mistakes. Don't try to fool the interviewer by stating you've never made a mistake. Instead, state the mistake, how you corrected it and what you learned from it. Don't play the blame game. The interviewer is asking for your mistake not a facility mistake. Avoid the time you may have been involved in a major event, although many of us have been in this situation, it may be a red flag to the interviewer.