Grade 100VLL Aviation Gasoline
- Published
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators and maintenance personnel should accept Grade 100VLL aviation gasoline for use in aircraft and engines approved for grades 80, 91, 100, or 100LL without requiring manual or placard changes. They should recognize that Grade 100VLL is visually identical to 100LL and complies with ASTM D910. No specific compliance deadlines are stated, but stakeholders should update fuel handling practices accordingly.
Summary
The Special Airworthiness Information Bulletin SAIB: NE-11-55 provides guidance on the use of Grade 100VLL aviation gasoline. This bulletin states that Grade 100VLL, meeting ASTM specification D910, is acceptable for use in aircraft and engines certified for grades 80, 91, 100, and 100LL aviation gasolines. It applies broadly to aircraft and engines approved for these fuel grades without specifying particular models.
What changed
SAIB NE-11-55 introduces Grade 100VLL as an approved aviation gasoline grade that meets all performance requirements of existing grades 80, 91, 100, and 100LL. It clarifies that Grade 100VLL has reduced lead content compared to 100LL but maintains the same octane rating and anti-knock performance. The bulletin confirms that Grade 100VLL is visually indistinguishable from 100LL and can be used under existing operating limitations and placards.
Why it matters
This bulletin matters because it allows operators, maintenance organizations, and regulatory personnel to use Grade 100VLL as a lower-lead alternative to 100LL without requiring changes to aircraft manuals, placards, or operating procedures. It supports environmental goals by reducing lead emissions while ensuring consistent engine performance and compliance with existing fuel specifications. This facilitates fuel availability and regulatory acceptance in the aviation community.
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