Airline transport pilot licence

The airline transport pilot license (ATPL), or in the United States of America, an airline transport pilot (ATP) certificate, is the highest level of aircraft pilot certificate.

In the United States, those certified as airline transport pilots (unconditional) are authorized to act as pilot in command on scheduled air carriers' aircraft under CFR 14 Part 121. In EASA states and the United Kingdom, pilots must hold an ATPL before they can be pilot in command of a multi-pilot aircraft flown for commercial air transport operations.

Context and privileges
Any pilot operating an aircraft for money must start by obtaining a commercial pilot license (CPL). This permits the pilot to carry out aerial work, such as crop spraying or banner towing.

However, in commercial air transport (CAT) operations, a CPL holder may only act as pilot in command of single-pilot aircraft or as co-pilot of multi-pilot aircraft. Commercial air transport is defined as "the transport of passengers, cargo or mail for remuneration or hire". To act as pilot in command of a multi-pilot aircraft, the pilot must hold an ATPL.

Like PPLs and CPLs, ATPLs do not expire. However, a pilot must hold a valid medical certificate and the appropriate class rating, type rating and/or instrument rating for the flying they intend to do.

EASA and United Kingdom
An applicant for an ATPL must already hold a CPL, a multi-engine instrument rating, and a multi-crew cooperation certificate. Alternatively, in EASA states and the United Kingdom, the applicant may only hold a Multi-Pilot License (MPL). ATPL holders who previously held an MPL are restricted to multi-pilot operations unless they complete a CPL skill test and other requirements.

For aeroplanes, the applicant must have 1500 hours as a pilot of airplanes, including 500 hours in multi-pilot operations on airplanes, and a minimum number of hours as pilot in command (PIC) and/or pilot in command under supervision (PICUS). Time as pilot of helicopters, sailplanes and touring motor gliders may be partially cross-credited. For helicopters, the applicant must have 1000 hours as a pilot of helicopters, as well as other hour requirements. Time as a pilot of aeroplanes may be cross-credited up to 50%.

The applicant must pass a skill test, demonstrating their ability to perform procedures and manoeuvres, as PIC of a multi-pilot airplane under IFR. The applicant must hold a type rating for the aircraft used in the skill test. The skill test may be carried out in a suitably qualified full flight simulator.

The minimum age to gain an ATPL is 21 years, and holders must have a Class 1 medical certificate. There are separate ATPL licences for aeroplanes and helicopters.

From the age of 60-64, pilots may only act as part of a multi-pilot crew in commercial air transport operations, however they may continue to act as Pilot In Command. From the age of 65, they may no longer act as a pilot in commercial air transport operations (from age 70 for balloons and sailplanes).

Theoretical examination
The EASA ATPL requires candidates to pass fourteen separate theoretical exams, with a six-month residential or twelve-month distance-learning course mandatory during this phase.

In EASA states and the United Kingdom, the 14 theoretical subjects included in the examination of ATPL applicants are:
 * Air law
 * Aircraft General Knowledge — Airframe/Systems/Power plant
 * Instrumentation
 * Mass and Balance
 * Aircraft Performance
 * Flight Planning and Monitoring
 * Human Performance and Limitations
 * Meteorology
 * General navigation
 * Radio navigation
 * Operational Procedures
 * Principles of Flight
 * Communications

All exams must be passed within an 18-month period. A CPL and/or Instrument Rating must then be gained within 36 months. Provided that a CPL and IR are achieved, ATPL examination results are accepted for seven years after the most recent validity date of the IR entered in the CPL.

ATPL exams are acceptable for the issue of a CPL, so most pilots skip the CPL exams and take their ATPL exams before they obtain their CPL.

A CPL held by a pilot who has completed all ATPL theoretical exams is popularly known as a "frozen ATPL", although this term has no legal significance.

United States
After the crash of Colgan Air Flight 3407, an air transport certificate became a requirement for all commercial air transport pilots. This effectively raised the number of flight hours required for new commercial pilots from 250 to 1500. Applicants with military or university flying training can apply for a restricted airline transport pilot certificate (R-ATP) with a reduced number of hours. The R-ATP can be obtained at age 21.

To be eligible to take the Federal Aviation Administration's (FAA) ATP practical test, the candidate must have at least 1500 hours of experience in aircraft, including 250 hours as a pilot-in-command (PIC), and be at least 23-years-old. Restricted Licenses (which allow the holder to perform only second-in-command duties) may be granted to individuals that meet one of the following criteria: The pilot can remove the restriction once they have achieved the normal prerequisites.
 * Military pilots who are 21 years or older with 750 hours total time.
 * Graduates with a four-year degree in aviation from certain approved universities, that have 1000 hours of total flight time and are 21 years or older.
 * Graduates with a two-year degree in aviation, who have 1250 hours and are 21 years or older.
 * Pilots with 1500 hours who are 21 years or older.

The FAA ATP flight test can be taken in a light piston aircraft with 1,500 hours of experience, however, the FAA additionally requires a 'Type Rating' to pilot any large or jet-powered aircraft. Most FAA-certified pilots earn their ATP certificate and Type Rating (aircraft specific) simultaneously via the successful completion of a part 121 airline training program and type rating check-ride.

While pilot certificates in the United States do not expire, pilots must undergo periodic flight reviews to ensure they are safe to operate aircraft.