A very big deal -- FAA Approves G100UL for ALL GA piston spark-ignition aircraft

Any DA40 related topics

Moderators: Rick, Lance Murray

User avatar
waynemcc999
5 Diamonds Member
5 Diamonds Member
Posts: 556
Joined: Sun Jun 08, 2014 3:38 pm
First Name: Wayne
Aircraft Type: DA40
Aircraft Registration: N211WP
Airports: KSBA
Has thanked: 1502 times
Been thanked: 399 times

A very big deal -- FAA Approves G100UL for ALL GA piston spark-ignition aircraft

Post by waynemcc999 »

"In a first for the aviation industry, the FAA has approved supplemental type certificates (STCs) for the use of General Aviation Modifications Inc.’s G100UL 100-octane unleaded avgas in all general aviation piston aircraft."

This includes not only our Lycoming DA40s... but also your friend's C182, SR22, or Bonanza!!

https://www.avweb.com/ownership/fuel-ne ... ton-fleet/
Last edited by waynemcc999 on Thu Sep 01, 2022 11:23 pm, edited 1 time in total.
Wayne McClelland
PPL/IR, 2008 Diamond Star DA40-XLS 40.922, KSBA
Photo logs of PilotsNPaws | Flying Doctors | Angel Flight | YouTube @GeezerGeekPilot
User avatar
perossichi
3 Diamonds Member
3 Diamonds Member
Posts: 188
Joined: Tue Sep 18, 2018 4:05 am
First Name: Peter
Aircraft Type: DA40
Aircraft Registration: N925RH
Airports: KVNY
Has thanked: 31 times
Been thanked: 75 times

Re: A very big deal -- FAA Approves G100UL for ALL GA piston spark-ignition aircraft

Post by perossichi »

Best news in years.
Sold 2002. Powerflo, Hartzell composite two blade, 530W/430, 345 transponder.
User avatar
Rich
5 Diamonds Member
5 Diamonds Member
Posts: 4592
Joined: Mon Aug 30, 2010 12:40 pm
First Name: Rich
Aircraft Type: DA40
Aircraft Registration: N40XE
Airports: S39 Prineville OR
Has thanked: 145 times
Been thanked: 1180 times

Re: A very big deal -- FAA Approves G100UL for ALL GA piston spark-ignition aircraft

Post by Rich »

This was a major surprise, as it looked like the FAA was going to drag this out far into the future. :thumbsup:

The remaining issue will be the actual rate of rollout. Lots of factors in play.
2002 DA40-180: MT, PowerFlow, 530W/430W, KAP140, ext. baggage, 1090 ES out, 2646 MTOW, 40gal., Surefly, Flightstream 210, Orion 600 LED, XeVision, Aspen E5
User avatar
Boatguy
5 Diamonds Member
5 Diamonds Member
Posts: 1827
Joined: Mon Jan 22, 2018 4:48 am
First Name: Russ
Aircraft Type: DA62
Aircraft Registration: N962M
Airports: KSTS
Has thanked: 1327 times
Been thanked: 1163 times

Re: A very big deal -- FAA Approves G100UL for ALL GA piston spark-ignition aircraft

Post by Boatguy »

This doesn't affect me, but how do they enforce the need for the STC? Honor system?
User avatar
Rich
5 Diamonds Member
5 Diamonds Member
Posts: 4592
Joined: Mon Aug 30, 2010 12:40 pm
First Name: Rich
Aircraft Type: DA40
Aircraft Registration: N40XE
Airports: S39 Prineville OR
Has thanked: 145 times
Been thanked: 1180 times

Re: A very big deal -- FAA Approves G100UL for ALL GA piston spark-ignition aircraft

Post by Rich »

Boatguy wrote: Thu Sep 01, 2022 11:25 pm This doesn't affect me, but how do they enforce the need for the STC? Honor system?
I believe you get new stickers for the fuel filler ports.
2002 DA40-180: MT, PowerFlow, 530W/430W, KAP140, ext. baggage, 1090 ES out, 2646 MTOW, 40gal., Surefly, Flightstream 210, Orion 600 LED, XeVision, Aspen E5
User avatar
waynemcc999
5 Diamonds Member
5 Diamonds Member
Posts: 556
Joined: Sun Jun 08, 2014 3:38 pm
First Name: Wayne
Aircraft Type: DA40
Aircraft Registration: N211WP
Airports: KSBA
Has thanked: 1502 times
Been thanked: 399 times

Re: A very big deal -- FAA Approves G100UL for ALL GA piston spark-ignition aircraft

Post by waynemcc999 »

Boatguy wrote: Thu Sep 01, 2022 11:25 pm This doesn't affect me, but how do they enforce the need for the STC? Honor system?
Russ, I don't directly know the answer wrt enforcement. I recently purchased the Swift Fuels UL94 STC and yesterday had it "installed" by my A&P. All "install" means is my A&P filed some papers to the FAA, gave me those papers to put in my a/c logbook, and he put a sticker on each wing by the fuel cap (as Rich noted) that says I can burn UL94 as well as 100LL. I assume the same process will play out for G100UL. Therefore the only likely enforcement is that the person (owner/operator, FBO) who fuels the aircraft must abide by this sticker.
Wayne McClelland
PPL/IR, 2008 Diamond Star DA40-XLS 40.922, KSBA
Photo logs of PilotsNPaws | Flying Doctors | Angel Flight | YouTube @GeezerGeekPilot
User avatar
haykinson
3 Diamonds Member
3 Diamonds Member
Posts: 114
Joined: Thu Apr 19, 2018 8:32 am
First Name: ilya
Aircraft Type: DA40NG
Aircraft Registration: N724LA
Airports: KSMO
Has thanked: 36 times
Been thanked: 48 times

Re: A very big deal -- FAA Approves G100UL for ALL GA piston spark-ignition aircraft

Post by haykinson »

At KSMO, the UL94 pump asks for your tail number and STC number before dispensing fuel. Obviously you can lie and use someone else's, but it's at least one method of driving compliance.
User avatar
mhoran
4 Diamonds Member
4 Diamonds Member
Posts: 476
Joined: Fri May 23, 2014 11:56 pm
First Name: Matt
Aircraft Type: DA40
Aircraft Registration: N269RB
Airports: KLDJ
Has thanked: 121 times
Been thanked: 244 times

Re: A very big deal -- FAA Approves G100UL for ALL GA piston spark-ignition aircraft

Post by mhoran »

Such great news. Would be amazing if my newly overhauled engine doesn't have to run on leaded fuel for long. Will see how the rollout progresses by November!
User avatar
gyro3816
3 Diamonds Member
3 Diamonds Member
Posts: 83
Joined: Sat Nov 17, 2018 5:25 pm
First Name: Adam
Aircraft Type: DA40
Aircraft Registration: N886KC
Airports: KPTK
Has thanked: 10 times
Been thanked: 80 times

Re: A very big deal -- FAA Approves G100UL for ALL GA piston spark-ignition aircraft

Post by gyro3816 »

Not sure I share the celebration here. Lead is used as an effective and CHEAP additive. The cost of the new blend will be somewhere between $0.55 and $0.90 incremental over todays 100LL once it is fully productionized at todays 100LL volumes. (Per AOPA story yesterday)
Until then we can expect higher. So as the Poms-Poms wave in Washington, just realize we can expect $$$ as new norm even after oil drops in years to come. This $0.90/gal incremental will be tough for those companies hauling supplies. Just another political feel-good tax imo.
Adam
CSEL, CMEL, Instrument
N886KC DA40 XLS, G1000 w GFC700
User avatar
TimS
5 Diamonds Member
5 Diamonds Member
Posts: 553
Joined: Thu Dec 02, 2010 1:10 am
First Name: Timothy
Aircraft Type: OTHER
Aircraft Registration: N1446C
Airports: 6B6 Stowe MA
Has thanked: 94 times
Been thanked: 97 times

Re: A very big deal -- FAA Approves G100UL for ALL GA piston spark-ignition aircraft

Post by TimS »

gyro3816 wrote: Fri Sep 02, 2022 11:32 am Just another political feel-good tax imo.
I mostly disagree from two perspectives:

First, the bottom end our avgas engines rarely have issues. However, engines which are used on a regular basis still have to have overhauls, largely due to sledge buildup and/or corrosion. The sludge, is comprised primarily of a lead bromide. Removing TEL will eliminate the continued buildup of this gunk. Which means, that corrosion will be the primary and likely the only concern (outside of SB/AD) causing engines to be rebuilt.

Second. We know scientifically that airborne lead, especially the types released from TEL is extremely harmful.
What we do NOT know if is there is a link between the amount now released and the lower GA activity level is if there is an immediate impact, or at what rate nature can absorb TEL without creating a cumulative impact.

Since we do not have actual controlled studies (which would likely be considered inhumane to execute); removing the target of GAs back about TEL is a very good thing.

Tim
Post Reply