Differences

This shows you the differences between two versions of the page.

--- atmos:pestiside:lead_sampling [2026/02/27 03:24] – [UND Fleet Leaded Fuel Analysis] lance.linenberg
+++ atmos:pestiside:lead_sampling [2026/03/06 16:28] (current) – delene
@@ Line 13: / Line 13: @@
 This process is called the Supplemental Type Certificate or an STC, which allows approved changes to the original aircraft design. This process could allow a different fuel type to be approved and airworthy provided the FAA finds reliability in this change.
-In addition to certification approvals, the FAA provides regulations for fuel efficiency certification under CFR 14 part 38 titled “Airplane Fuel Efficiency Certification.” Furthermore the FAA produces advisory circulars which provide industry recommendations for fuel testing, manufacturer limitations, and provide guidance for compliance with regulations.
+In addition to certification approvals, the FAA provides regulations for fuel efficiency certification under CFR 14 part 38 titled “Airplane Fuel Efficiency Certification.” Furthermore, the FAA produces advisory circulars which provide industry recommendations for fuel testing, manufacturer limitations, and provide guidance for compliance with regulations.
-eCFR :: 14 CFR Part 38 -- Airplane Fuel Efficiency Certification (FAR Part 38)
+CFR :: 14 CFR Part 38 -- Airplane Fuel Efficiency Certification (FAR Part 38)
-AC 20-24C Approval of Propulsion Fuels and Lubricating Oils
+- https://www.ecfr.gov/current/title-14/chapter-I/subchapter-C/part-38
+AC 20-24C Approval of Propulsion Fuels and Lubricating Oils
+- https://www.faa.gov/documentLibrary/media/Advisory_Circular/AC%2020-24C.pdf
@@ Line 26: / 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]]