MOGAS STC

How to keep the Cessna 170 flying and airworthy.

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oldtrucksrule
Posts: 71
Joined: Wed Aug 31, 2016 12:33 pm

MOGAS STC

Post by oldtrucksrule »

I'm perusing my engine logbook for an engine (new to my airframe) and it includes STC SA762GL and SE693GL

My question is, does the STC SE693GL apply to my engine C-145-2? When I search for this particular STC it shows applicable to the C 170b O-300A

SA762GL seems to be approved for my 1948 C170 airframe.

Thanks, Cory
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n2582d
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Joined: Mon Apr 29, 2002 4:58 am

Re: MOGAS STC

Post by n2582d »

Cory,
STC SE693GL has been superseded by STC SE01943CH. Item 10 on the Approved Model List (AML) includes the C145-2 engine.
Gary
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GAHorn
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Re: MOGAS STC

Post by GAHorn »

What is interesting to me is that the superceding STC does not mention it is such, the SE693GL is not “cancelled” (it is “surrendered”) which did not notify the owners who held it..(?)

However the C-145 series and the O-300 series are all on the same Type Certificate (E253)…which makes either STC applicable. IMO

Cory, the STC changed to accomodate modern auto fuels and you can obtain a copy of the new STC from EAA. (The old one was (supposedly) in the public domain but the new one requires purchase. I’d seriously doubt anyone would challenge/enforce a 170 using autogas, but to dot your i’s and cross your t’s…. )

PS: Don’t use ethanol (E10) or other ethanol fuels.
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons. ;)
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oldtrucksrule
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Re: MOGAS STC

Post by oldtrucksrule »

Great, Thanks to you both for the quick reply! What a wealth of information this resource posess.

Cory
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