Commercial Pilot License (CPL) 2026 – 400 Free Practice Questions to Pass the Exam

The correct response is that the Seminole uses 100 low lead avgas, which is commonly denoted by the blue color. This type of fuel is specifically designed for piston engine aircraft like the Piper Seminole, providing high performance while minimizing lead contamination and environmental impact.

In general aviation, 100LL has become the standard fuel for many piston engine aircraft due to its ideal octane rating and its relatively low lead content compared to older avgas formulations. While Jet A fuel is used in turbine engines, and options referring to 100 octane avgas (red) or 100LL (green) are misinterpretations of how these fuels are labeled or categorized, they do not apply to the Seminole. Therefore, 100 low lead avgas is the appropriate choice for powering this aircraft.