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Are you flying legally on Hjelmco unleaded AVGAS 91/96 UL® and AVGAS 91/98 UL® ?
03 April 2016
Hjelmco unleaded AVGAS 91/96 UL® and AVGAS 91/98 UL® have successfully been used for more than a quarter of a century.
However operating on a fuel which is not listed in the POH (Pilot Operating Handbook) or AFM (Aircraft Flight Manual) but is listed as an approved fuel with the aircraft engine manufacturer requires special procedures.
EASA has issued a special instruction how to handle this issue which can be downloaded from the upper hand corner.