Chapter 90

The FAA has worked with ASTM to evaluate a new grade of aviation fuel, 100VLL.  After completing the evaulation the FAA has issued Special Airworthines Information Bulletin NE-11-55 with the following recommendations:

• Grade 100VLL avgas is acceptable for use on those aircraft and engines that are approved to operate with grades 80, 91, 100, or 100LL avgas. 2
• ASTM International standard D910 specifies blue coloration for both grade 100VLL avgas and grade 100LL avgas, and, therefore, these fuels are visually indistinguishable from each other.
• Operating limitations in Aircraft Flight Manuals, Pilot Operating Instructions, or TCDSs that specify grades 80, 91, 100, or 100LL avgas fuel are acceptable for use with grade 100VLL avgas.
• Current aircraft placards that specify grades 80, 91, 100, or 100LL avgas are acceptable for use with grade 100VLL avgas.
• Operating, maintenance, or other service documents, for aircraft and engines that are approved to operate with grades 80, 91, 100, or 100LL avgas, are acceptable for use when operating with grade 100VLL avgas.

For more information and to see a copy of the bulletin click here:  SAIB NE-11-55