Recent Boeing projections show that the world will need to produce twice as many commercial pilots over the next 20 years.

Concerns are mounting in the wake of a recent announcement revealing an unprecedented pilot shortage. According to yearly projections from Boeing (NYSE: BA) for pilots and technicians, the world’s commercial aviation fleet is expected to double over the next 20 years. This will drive a demand for 790,000 pilots, a staggering number who need to be trained and ready to fly a commercial airliner to keep up with the growth.

The result is the greatest demand for pilots in the past decade of Boeing’s annual projections. The prognosis has industry-wide implications in a world where air travel is booming. “Despite strong global air traffic growth, the aviation industry continues to face a pilot labor supply challenge, raising concern about the existence of a global pilot shortage in the near-term,” said Keith Cooper, vice president of Training & Professional Services, Boeing Global Services. “An emphasis on developing the next generation of pilots is key to help mitigate this.”