Flight engineers spend the majority of their time on the airplane itself. As a result, working hours are often unpredictable due to constant flight delays and changes in schedules. They often have to work on late night flights and travel across the country or the world. This means that there can be little time spent at home. When not in the air, most of their time is still spent at the airport alongside the aircraft. This is a definite advantage for those who dislike a traditional office job.