Black Lake incident

The Black Lake incident occurred at some point during the 1987–1988 school year, when one of the students at the school began flying over the Great Lake and repeatedly dived into the water. After this, then Headmaster Albus Dumbledore decided that no broom should be borrowed to students outside of flying class.

Shortly after this incident took place, Jacob's sibling approached Madam Hooch and asked to borrow a broom. Suspicious, the flying instructor informed him about both the incident as well as Professor Dumbledore's strict instruction for students not to be allowed to use the school brooms unsupervised. She then proceeded to inquire the reason as to why they wanted to borrow the broom. The student in question, who wanted to use it to fly into the Forbidden Forest in search of the next Cursed Vault, hoping it would lead them to their long lost brother, either told the truth or lied that they wanted to practice flying so that they could join the Quidditch Team of their house. Madam Hooch did not fall for it, however, stating that she suspected that they were not being completely honest with her but did not intend to punish them for it since she had no proof. Even so, she still warned them that they should thread carefully so that she did not find any, suggesting she often tends to punish students lying very severely. She also refused to borrow them a broom, due to Dumbledore's orders.