| Definitions
FAR Part
FAR is an acronym that stands for Federal Aviation Regulation.
The FARs are part of the U.S. Government's Code of Federal Regulations,
a portion of which govern the airworthiness, maintenance and operation
of aircraft. Parts 121, 135, and 91 all concern the operation of various
segments of aviation.
Part 121
Applies to major airlines and cargo carriers that fly
large transport-category aircraft.
Scheduled Part 135
Applies to smaller aircraft that carry 9 or fewer passengers
on regularly-scheduled routes.
Nonscheduled Part 135
Applies to smaller aircraft conducting on-demand operations
as defined in 14 CFR 119.3 with schedules that are arranged between passengers
and the operator (also known as “air taxis”) and scheduled passenger-carrying
operations conducted on a limited basis. Also includes cargo planes with payload
capacities of 7,500 pounds or less.
Part 91
One segment of aircraft operations, known as general
aviation, are conducted under Part 91. General aviation refers to
all aviation other than commercial (scheduled and non-scheduled)
airline operations and military aviation. For example, flights for recreation
and training are generally carried out under Part 91. Although general
aviation usually involves small aircraft, the definition depends on the
nature of the operation not the size of the aircraft.
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