Differences Between FAA Part 91, 121, and 135 in Aviation
Pilot Institute
FEBRUARY 26, 2025
Part 121 governs airlines with the highest safety standards. Despite us pilots considering ourselves the epitome of human perfection, few are bar-certified lawyers. Think of regional and major airlines such as Delta, Southwest, American, SkyWest, and large cargo aircraft operated by FedEx or UPS. What Are the Parts?
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