2011-01R2 : Unleaded Aviation Gasoline (Avgas) UL 91
EASA approval number
EASA Propulsion Section
/ Type Designation
Safety Information Bulletin
Revision 2 of SIB 2011-01 is issued to allow the use of Unleaded Avgas UL 91 on engines and aeroplane types approved for use with Mogas RON 95 (MON 85). In addition, some references to standards and specifications, as well as service documents, have been added or updated to reflect the latest revisions.
Publication(s) and related information
Standards and Specifications: ASTM D7547-11 “Standard Specification for Unleaded Aviation Gasoline”. ASTM D910-11 “Standard Specification for Aviation Gasoline”. Defence Standard 91-90 Issue 3 EN 228:2008 “Automotive fuels - Unleaded petrol - Requirements and test methods”. Related Service Information of Engine Type Certificate Holders: Rotax Service Instruction SI-912-016/SI-914-019 Revision 5. Lycoming Service Instruction No. 1070R Later revisions of these standards and service publications are acceptable.
For further information contact the Airworthiness Directives, Safety Management & Research Section, Certification Directorate, EASA. E-mail: ADs[at]easa.europa[dot]eu.
SIB_201101_R2_Use_of_UL91.pdf (69 kb)
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