What is the maximum allowable dilution ratio for fuel without Prist in the Pilatus PC-12 NG?

The maximum allowable dilution ratio for fuel without Prist in the Pilatus PC-12 NG is 60 gallons for every 100 gallons of fuel. This ratio is essential for maintaining fuel quality and preventing issues related to ice formation and microbial growth within the fuel system.

Using a dilution ratio greater than this can compromise the effectiveness of the fuel, potentially leading to performance issues or damage to the engine. The specified limit helps ensure that there is an adequate concentration of anti-icing and biocidal additives, which are critical in certain operational conditions, particularly in colder climates where ice formation is a risk. Following the guidelines ensures the operational safety and efficiency of the aircraft.