Part 135 Rest, Duty Regs Review Leads to Calls for Change

A Part 135 rest and duty rules committee is pushing for new regulations that overhauls decades-old rules with a set of science-based regulations.

Phenom 300 at night — Fatigue, particularly with Part 135 operators flying at night, is a major problem in the industry. (Photo: Embraer)

By Stuart “Kipp” Lau • Contributor - Safety

March 31, 2023

Decades-old Part 135 pilot rest and duty regulations may soon give way to a more progressive set of science-based rules. Current regulations, according to experts, are far too prescriptive and fail to recognize the effects of circadian rhythm and cumulative duty time. A new set of rules is soon expected to enter the notice of proposed rulemaking process and would be based on modern fatigue science while accommodating the diversity of operations within the charter and air ambulance industry.

In July 2021, the Part 135 Pilot Rest and Duty Rules Aviation Rulemaking Committee (ARC) submitted its recommendations to the FAA, after nearly three years of collaborative industry work. Established by the FAA Reauthorization Act of 2018, the Pilot Rest and Duty Rules ARC was formed to identify the effectiveness and deficiencies of the current Part 135 regulatory framework and develop recommendations for future rulemaking activities.

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