§ 135.267 Flight time limitations and rest requirements: Unscheduled one- and two-pilot crews. (1) 500 hours in any calendar quarter.(2) 800 hours in any two consecutive calendar quarters.(3) 1,400 hours in any calendar year.
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(e) No pilot may fly as a member of a crew more than 100 hours during any one calendar month. (f) No pilot may fly as a member of a crew more than 1,000 hours during any 12-calendar-month period.
Part 121 is scheduled air carrier (airliners). Part 133 is external load (helicopter) operations. Part 135 is a set of rules with more stringent standards for commuter and on-demand operations. Part 135 operator rules govern commercial aircraft.
Part 121, Part 125, Part 129, and Part 135 MinimumsOne or two engines: one statute mile of visibility; no ceiling minimum. Three or more engines: one-half statute mile of visibility; no ceiling minimum. Helicopters: one-half statute mile of visibility; no ceiling minimum.
1. The World's Longest Flight: New York (JFK) to Singapore Changi (SIN) New York John F Kennedy Airport – Singapore Changi is currently the longest commercial flight it is possible to book.
The 90-day rule applies when carrying passengers. The licence holder must have completed within the previous 90 days, three take-offs and landings as sole manipulator of the controls in the same type or class to be used on the flight.
What is the primary distinction between these different parts of the regulations? Part 91 applies to general aviation and non-commercial operations(civil aircraft). Part 135 applies to commercial on-demand operations(such as private jets). Part 121 applies to large-scale scheduled commercial air carriers.