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Voice of the Aerial Application Industry
January 27, 2022
In Case You Missed It!
Future of Leaded Av Gas Uncertain

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In mid-January, the EPA released a letter addressed to several environmental groups and one county in California stating that the agency now intends to develop a proposal regarding whether lead emissions from piston-engine aircraft cause or contribute to air pollution that may reasonably be anticipated to endanger public health or welfare. The EPA plans to issue a proposed endangerment finding later this year. After evaluating comments on the proposal, the EPA plans to issue any final endangerment finding in 2023. To read these letters, click here.


Although the automotive industry has been able to move away from leaded fuel by using fuels such as ethanol, the same fuel transition cannot be as easily accomplished with aircraft. Adding ethanol to avgas could lead to vapor lock, cause corrosion, possibly introduce water into the fuel system and reduce the energy content of the fuel. The EPA has in the past accepted the case for continuing to use lead in aviation fuel as it is necessary for the safety of flight with gasoline-powered engines. NAAA insists on safety first for aircraft operations that depend on leaded aviation fuels and will comment as such to the EPA.

An endangerment finding could result in the elimination of leaded avgas. There has been concern about lead in aviation fuel since the 1980s when lead was removed from automotive fuel. While no good solution has been previously found, a new unleaded fuel has been developed. NAAA reported in the July 29, 2021 eNewsletter that the Federal Aviation Administration formally awarded a supplemental type certificate (STC) to General Aviation Modifications Inc. (GAMI) for an unleaded 100-octane avgas called G100. The list of approved engines has been greatly expanded, with more engine approvals expected in the spring of 2022.

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This newsletter is intended for NAAA members only. NAAA requests that should any party desire to publish, distribute or quote any part of this newsletter that they first seek the permission of the Association. The views, thoughts, and opinions expressed herein do not necessarily represent those of the National Agricultural Aviation Association (NAAA), its Board of Directors, staff or membership. Items in this newsletter are not the result of paid advertising and are only meant to highlight newsworthy developments. No endorsement by NAAA is intended or implied.
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IN THIS ISSUE
NAAA Continues to Battle Harmful 5G Signals and Towers
Unpacking CropLife America’s Research on Consumers’ Perceptions of Pesticides
Supreme Court to Hear Case Questioning Reach of Clean Water Act
Aerial Applicators’ Growing Role Videos Available for Member Use
NAAA and NAAREF Board Meetings, Feb. 18-19, Moved from Montreal to Fort Worth
Airworthiness Directive Issued on Model UH-1H (Huey) Helicopter Drive Shafts
Proposed Airworthiness Directive on Bell 205 and Related Helicopter Models’ Tail Boom Spar Caps
In Case You Missed It!
Future of Leaded Av Gas Uncertain
EPA Announces Endangered Species Act Protection Policy for New Pesticides
NAAA Comments on Overwatch Aero LLC Drone Petition for Relief from FARs
USDA Unveils Plan to Combat an Additional 50 Million Acres of Wildfires
Update Your Information for 2022 Member Directory
Set Yourself Up for New Year’s Success by Renewing Your NAAA Membership
NAAA Joins Over 350 Organizations to Oppose Senate Bill Proposing Changes to FIFRA that Eliminate Science-based Decision-Making
Winter 2022 Issue of Agricultural Aviation Now Online!
Order Aerial Application Centennial Specialty Items
We All Have a Telling History: Use Yours and NAAA’s Materials to Broadly Communicate Agricultural Aviation’s
NAAA Releases Book of the Century! Buy It Today
CALENDAR OF EVENTS

January 26-28

New Mexico AAA Convention

Inn of the Mountain Gods
Mescalero, NM
Sue Stewart
(940) 864-2456

 

February 7-9

Southeast AeroCultural Fair

Francis Marion Hotel
Charleston, SC
Linda Minton
(772) 465-0714

 

February 13-15

North Carolina AAA Convention

Hilton Garden Inn Outer Banks
Kitty Hawk, NC
Leslie Craft
(252) 426-9676


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