Definition
The highest grade of pilot certificate issued by the FAA, required to act as pilot in command of scheduled air carrier operations and certain other large or turbine-powered aircraft. It requires a minimum age of 23 (21 for the restricted ATP), at least 1,500 hours of total flight time (less for the restricted ATP), specific aeronautical experience, completion of an ATP Certification Training Program, and passing both a knowledge test and a practical test to ATP standards.
Plain English
The top-level pilot license in the United States. You need it to fly for the airlines as captain, and it has the highest experience and skill requirements of any pilot certificate.
Context Anchor
Seen in advanced pilot training and airline-training discussions, including simulator-based upset prevention and recovery training.
Derivation
“Transport” comes from older words meaning “to carry across.” That fits the aviation meaning: an airline transport pilot is qualified for flying that carries people or cargo in airline-type operations.
Why Pilots Care
This certificate is mandatory for airline captain positions and represents the regulatory standard for the most demanding commercial flying roles.
Intuition Check
Do not read “airline transport pilot” as simply any pilot who flies for an airline. Here it means a specific FAA pilot certificate level with required qualifications and privileges.
Example Sentence 1
After finishing her ATP-CTP course and passing the checkride, she earned her ATP certificate and upgraded to captain at the regional.
Example Sentence 2
Airlines typically require the ATP certificate before assigning a pilot to fly jet aircraft on passenger routes.