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EAA Aviation Fuels and Auto Fuel STC Information

Bulletin No. 2000-1
Revision  No. 1
Date: March 1, 2000
Revised: January 20, 2005

Applicability
This Service Bulletin applies to all aircraft previously modified in accordance with automotive fuel Supplemental Type Certificates (STCs) supplied by EAA Aviation Foundation or Experimental Aircraft Association, Inc. See attached list of aircraft models approved under EAA automotive gasoline STCs. This revision supersedes Service Bulletin 2000-1, dated March 1, 2000. Revision reflects change of ownership of STCs from EAA Aviation Foundation to Experimental Aircraft Association, Inc. and previous EAA Foundation consolidation of Autofuel STCs into two STCs specified as SA01944CH and SE01943CH.

Reason
A new aviation fuel known as 82UL has been approved in the United States. Due to the possibility of 82 UL having a higher volatility than previous aviation fuels and because of other differences from previous aviation fuels, it has been determined that some method of airframe re-certification was needed. Since, among many other things, volatility testing was conducted as an integral part of automotive gasoline STC testing and 82UL has a lower volatility requirement than automotive gasoline, the FAA has approved the use of 82UL aviation gasoline in aircraft which hold an Automotive Gasoline STC.

However, 82UL is not suitable for every airplane which utilizes an automotive gasoline STC. The octane of 82UL is more than adequate for use in engines that were originally rated on 80/87 or lower octane fuel. EAA STCs only cover engines that were certificated to 80/87 grade or lower gasoline. However, STCs issued for some higher compression engines require the use of 91 octane at a minimum. Airplanes so equipped are NOT ELIGIBLE for the use of 82UL. Installation of revised fuel placards is intended to clarify the minimum fuel octane requirement of each airplane modified to use automotive fuel and prevent the introduction of 82 UL into higher compression engines.

Compliance

No later than August 1, 2000, replace previously installed fuel placards with revised fuel placards which specifically state:

THIS AIRCRAFT IS APPROVED TO USE THE
FOLLOWING UNLEADED GASOLINES:
Automotive Gasoline 87 Min. AKI
Per ASTM Spec. D-4814

82 UL Aviation Gasoline
Per ASTM Spec. D-6227 (Color Purple)

DO NOT USE AUTOMOTIVE GASOLINE CONTAINING ALCOHOL

Availability
Revised placards are available from the Experimental Aircraft Association, Inc. 800-236-4800 or STC@eaa.org.
 
Weight & Balance

No change to weight and balance.
 
Instructions

Remove and replace existing fuel placards with revised placards in accordance with this Service Bulletin.

AIRFRAME MODELS APPROVED
Revised 5/20/96

AERONCA INC. Bellanca Champion,
Trytek
Wagner, B&B Aviation, Citabria
Most models, 7 and 11 series.
*7KCAB
ARCTIC AIRCRAFT CO. INC.
Interstate
S-1A, *S-1B1, S-1132
BEECHCRAFT INC. Bonanza 35, A-35, B-35, C-35, D-35, E-35, F-35, G-35, 35R
CESSNA 120, 140, 140A, 150, 150A-H, 150 J-M, A-150K-M, 152**, A152**, 170, 170A, 170B, 172, 172A-E, 172E (T-41A), 172G, H, P-172, 172I, K, L, M, 175, 175A, B, C, 177, 180 180A-H, 180J, 182, 182A-P, 305A (0-1A), 305B, 305E (TO-1D, O-1D, O-1F), CP-55, CP-65, CS-65
COMMONWEALTH, INC. Skyranger, Rearwin 175, 180, 185
ERCOUPE, INC. Airco Skyranger and Rearwin 415C, D, E, G, 415-CD, F-1, F-1A, A-2, A-2A, M10
FUNK B-85C
GRUMMAN, INC. Gulfstream American AA-1, -1A, -1B, -1C, AA-5, -5A
LUSCOMBE, INC. Temco 8 Series, 11A
MAULE M-4, Most Models
MOONEY M-1 8C, -18C55, -18L, -18LA
PIPER E-2, J-2, J-3 (Most Models), J-4 (Most Models), J-5 (Most Models), PA-11 (Most Models), PA-12 (Most Models), PA-14, *PA-15, PA-16, PA-17, PA-18 (All Models), PA-19 (All Models), PA-20 (All Models), PA22 (Most Models), PA-28-140, -150, -151
PORTERFIELD, INC. Rankin & Northwest 305C (O-1E), 305D (O-1G), 305E
STINSON *108 Series, HW-75 10
SUPERIOR AIRCRAFT CO, INC. LCA, *LFA, Culver, Cadet
TAYLORCRAFT A, BC (Most Models)
VARGA 2000C, 2150, 2150A, 2180 (Some Models)

  NOTE: * Airframe Approvals Only

  ** Requires Engine Modification
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