Modern airliners require only two pilots: the captain and the
first officer. Before a pilot is fully qualified to operate as first officer, they will typically act as a second officer, sitting in the right hand seat, while undergoing training and supervision from a training captain. A
safety pilot will sit in the
jump seat to monitor the junior first officer and the captain. In some airlines, a second officer is not permitted to take off or land the aircraft, and will only fly the aircraft during the
cruise. In such cases they are also known as "cruise pilots" or "cruise relief pilots". At
Singapore Airlines and
Scoot, second officers are usually promoted to first officer after 5-8 months. ==Usage==