Here’s the text to the listening from yesterday.
A small passenger jet was flying from Canada to USA. It had 84 people on board. While flying at FL300 about 100nm west of its airport of origin, the crew received a fuel imbalance warning. It indicated a loss of 500kg of fuel from the left tank. The crew thought that the loss of fuel was because of a fuel leak. They declared PAN PAN and returned to their airport of origin for a safe landing about 35 minutes after departure.
Maintenance found the problem and fixed it after the plane landed.
Important vocabulary: fuel imbalance, fuel leak, PAN PAN, airport of origin.