Part 2/7:
As the aircraft, an Airbus A320, taxied from Barcelona's Terminal 1, the cockpit was staffed by a crew of three pilots: a highly experienced captain with over 10,000 flight hours, a trainee first officer, and a backup first officer with extensive flying experience. The captain, training the new first officer, would have to balance instruction with the responsibility for safety as they journeyed toward Seville, with expectations of a busy yet uneventful flight.