Operators (Part 125 / 135)
Part 135 and Part 125 FAA certificate holders use aircraft for chartered flights; the difference between the two certificates is the size of the aircraft used.
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Explore a comprehensive suite of aviation solutions covering key FAA certifications and operations, including Parts 121, 125, 135, 139, 145, and 91/91K. This overview highlights how our solutions support operators, airports, repair stations, pilots, and training programs with clear guidance, streamlined compliance, and operational efficiency across the aviation ecosystem.
Part 135 and Part 125 FAA certificate holders use aircraft for chartered flights; the difference between the two certificates is the size of the aircraft used.
Carriers providing regularly scheduled commercial flights, like airlines and cargo transport, are required to have a Part 121 air carrier certificate.
Some airports hold a FAA Part 139 airport operating certificate. These airports serve scheduled and unscheduled flights on aircraft with more than 30 seats.
A Fixed Base Operator (FBO) is essentially a private terminal for non-commercial flights that is located on airport property.
Any aircraft repair operation that wishes to work on regulated aircraft must obtain a Part 145 Repair Station certification from the FAA.
As the name suggests, these pilots work for private clients or for aircraft operators as an independent contractor with a contractor agreement.
Aircraft that is not operated under Parts 135, 125 and 121 are generally classified as Part 91 and do not require an FAA air carrier certificate.
When choosing a flight school, students can select either a Part 61 school or a Part 141 school with FAA-approved curriculum.
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