According to the UL power website the fuel requirement for a 520 is : MOGAS with min. 97 octane rating or AVGAS (98 Oct = 90MON = 94 AKI)
In Europe, the octane rating on the pump is simply the RON figure. America, by contrast, uses the average of the RON and the MON figures, called the AKI (anti-knock index). Thus, 97 octane “super unleaded” in Britain is roughly equivalent to 91 octane premium in the United States.
Dogwood Airpark, VA
RV-14 Tail kit in progress
Wing kit ordered
Last edited by Yank : 04-15-2021 at 09:16 AM.