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--- atmos:pestiside:lead_sampling [2026/02/27 16:19] – lance.linenberg
+++ atmos:pestiside:lead_sampling [2026/03/06 16:28] (current) – delene
@@ Line 16: / Line 16: @@
 CFR :: 14 CFR Part 38 -- Airplane Fuel Efficiency Certification (FAR Part 38)
-https://www.ecfr.gov/current/title-14/chapter-I/subchapter-C/part-38
+- https://www.ecfr.gov/current/title-14/chapter-I/subchapter-C/part-38
-AC 20-24C Approval of Propulsion Fuels and Lubricating Oils
+AC 20-24C Approval of Propulsion Fuels and Lubricating Oils
+- https://www.faa.gov/documentLibrary/media/Advisory_Circular/AC%2020-24C.pdf
@@ Line 28: / Line 28: @@
 Tetraethyl lead (Pb(C₂H₅)₄) is added to aviation gasoline used in piston-engine aircraft to prevent engine knocking and to raise octane levels. While fuel with less lead can be made, it becomes harder to meet the high-octane requirements needed for high-performance aircraft. Switching to unleaded aviation fuel is challenging for several reasons, including cost, FAA safety regulations, and engine compatibility. Creating a fuel that meets safety standards, provides enough octane for proper engine performance, and is affordable is a complicated process.
+==== Papers ====
+  * [[https://www.combustion-engines.eu/The-future-of-leaded-aviation-fuel-navigating-the-challenges-of-transition,210465,0,2.html|The future of leaded aviation fuel: navigating the challenges of transition]]