WEATHER P. 90 / FLYING SMART P. 93 / SAVVY MAINTENANCE P. 95 / SAFETY P. 98 / NEVER AGAIN P. 100 RUDDER & WRENCH UNLEADED FUEL / One airplane, two fuels AOPA puts unleaded fuel to the test BY DAVE HIRSCHMAN THE IDEA COULDN' T be simpler: To learn about the real-world performance of unleaded aviation fuels, AOPA will measure them against leaded avgas in a twin-engine airplane. The unleaded fuel will go in the left wing and feed the left engine. Leaded avgas (100LL) will go in the right wing and feed the right engine. 86 AOPA PILOT / January 2024 DAVID TULIS