June 10, 2013, the FAA asked fuel producers to submit
proposals for replacement fuels by July 1, 2014. The
goal is to identify, select, and provide fleetwide
certification for fuels determined to have the lowest
impact on the general aviation fleet.
will analyze the candidate fuels in terms of their
impact on the existing fleet, the production and
distribution infrastructure, their impact on the
environment, their toxicology and the cost of aircraft
By September 1, 2014, the FAA will select several of
the fuels for phase-one laboratory and rig testing.
Based on the results of the phase one testing, the
FAA anticipates that two or three fuels will be
selected for phase-two engine and aircraft testing.
That testing will generate standardized
qualification and certification data for candidate
fuels, along with property and performance data.