As the month of June was winding down, Cirrus Aircraft became the most recent party to snub GAMI’s FAA-approved 100LL high-octane unleaded fuel replacement, G100UL. On the 18th of the month, it issued its Service Advisory SA24-14, which said that Cirrus did not approve the use of G100UL in its aircraft, that its material compatibility testing was inconclusive and that it did not “warrant or represent in any way an operator’s use of GAMI G100UL fuel in SR Series airplanes.”
Interestingly enough, it wasn’t mentioned that GAMI had been running G100UL in the right fuel tank of an SR22 continuously for 14 years without any problem—which is longer than any aircraft product test program we’ve ever experienced. It also didn’t mention that its personnel had followed the results of the testing closely.