[f-AA] STC for A75

Harvey Brock

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Nov 30, 2019, 6:36:46 PM11/30/19

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About a week ago I have searched for the static RPMs of the Continental A75. Someone suggedted looking at the STC.

I have the STC SA2875WE, which calls for minimum static RPMs of 2225 and maximum of 2350. I was working away from home so it took me a few days to get to my records.

Harvey, who took the 0 SMOH engine for a test flight yestrday.

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Richard Murray

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Nov 30, 2019, 6:43:32 PM11/30/19

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Harvey-

If you have a copy of John Owens Service Letter Two I would appreciate a copy for my collection.

Richard in OH who collects data from time to time for the occasion it might be needed for reference.

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Harvey Brock

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Dec 1, 2019, 8:42:35 AM12/1/19

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Richard,

I had the Owens STC for the Chief that Duane has now. It also was serial number specific as I suppose all of these are.

Duane might still have a copy even though he has replaced the A75 with a C85. I have an STC from Champion Aircraft for this Champ.

Harvey, who is debating on what to do with the A75 I removed.

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Richard Murray

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Dec 1, 2019, 10:30:58 AM12/1/19

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Harvey

Thanks for the update. I have the STC from Owens for the Chief and Service Letter 1

Richard in OH where 44 degrees and blue skies beckond me to get in a half an hour of airborne pleasure

cgmi...@unwiredbb.com

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Dec 1, 2019, 4:23:23 PM12/1/19

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Here is a copy of the Service Letter 2 for my Champ.

Glenn Miller

> Harvey-
>
> If you have a copy of John Owens Service Letter Two I would appreciate a
> copy for my collection.
>
> Richard in OH who collects data from time to time for the occasion it
> might
> be needed for reference.

Image.jpg

Image (2).jpg

Image (3).jpg

Harvey Brock

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Dec 1, 2019, 5:02:32 PM12/1/19

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That makes me question page 3, note a. I wonder if 1220 pounds is a typo. Just curious!

Harvey, where direct crosswinds are in upper teens with gusts in mid and upper 20s.

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-------- Original message --------
From: cgmi...@unwiredbb.com
Date:12/01/2019 3:22 PM (GMT-06:00)
To: aer...@westmont.edu

cgmi...@unwiredbb.com

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Dec 1, 2019, 6:05:12 PM12/1/19

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I looked up the Type Certificate Data Sheet on the FAA web site (see
attached) and it shows 1220.
Glenn Miller

a-759.pdf

Harvey Brock

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Dec 1, 2019, 6:59:57 PM12/1/19

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Thanks,

Richard Murray

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Dec 1, 2019, 8:39:24 PM12/1/19

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Thanks Glenn that's what I needed.

Richard in OH wishing I could be in California the 6th and 7th for auction

Duane Fey

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Dec 2, 2019, 1:21:05 AM12/2/19

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I still have the STC that came with the engine that was in the Chief when I bought it from Harvey. The next time I’m at the airport I’ll grab it, scan it and send it. It’s supposed to rain here all week. I don’t plan on being out there too much this week. Let’s hope for a sunny weekend.

Here are a couple of pictures I took Saturday. We finally took the blown up A75 apart. The number 4 is the one I’m showing here.

Best to all,

Duane

‘46 Chief, N85981

Roger Anderson

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Dec 2, 2019, 7:38:59 AM12/2/19

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Wow! How did that happen Duane? roger

Richard Murray

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Dec 2, 2019, 4:40:37 PM12/2/19

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Duane-

I have both John T Owens Service Letters now. No need to make a copy.

How did your case let go? Was in on the ground? Looks like a thru-bolt migh have been the starting point?

Richard in OH who has spoken with Tom Owens about his father's STC for Chiefs and Champs

On Mon, Dec 2, 2019, 1:21 AM Duane Fey <duan...@gmail.com> wrote:

I still have the STC that came with the engine that was in the Chief when I bought it from Harvey. The next time I’m at the airport I’ll grab it, scan it and send it. It’s supposed to rain here all week. I don’t plan on being out there too much this week. Let’s hope for a sunny weekend.

Here are a couple of pictures I took Saturday. We finally took the blown up A75 apart. The number 4 is the one I’m showing here.

Best to all,

Duane
‘46 Chief, N85981

On Dec 1, 2019, at 5:42 AM, Harvey Brock <harve...@hotmail.com> wrote:

Duane Fey

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Dec 2, 2019, 6:12:12 PM12/2/19

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Richard,

Glad you got the STCs.

The #4 cylinder is the one that blew off. It's one that doesn't use a through bolt. Just 6 studs in the case. I'm not sure what the cause was, but it was an eye opening experience for a student pilot.

Duane

'46 Chief, N85981

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Duane

'46 Chief, N85981

Duane Fey

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Dec 2, 2019, 6:14:09 PM12/2/19

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Richard,

I was 700' off the ground when it became very apparent that there was an issue with my engine.

Duane

'46 Chief, N95981

On Mon, Dec 2, 2019 at 1:40 PM Richard Murray <murra...@gmail.com> wrote:

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Duane

'46 Chief, N85981

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Roger Anderson

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Dec 2, 2019, 6:21:40 PM12/2/19

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Duane. Was it just a sudden cylinder leaving the engine? Then what? I’ve seen valves sucked and rods thrown but not a cylinder departing the engine totally. roger

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Duane Fey

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Dec 2, 2019, 8:27:34 PM12/2/19

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Roger,

About 3/4 of the case snapped. The loud noise I heard was the base of the cylinder slapping against what was left of the case. When I stopped and turned the engine off it sat there looking almost normal.

Here’s what I saw.

Duane

‘46 Chief, N85981

Roger Anderson

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Dec 2, 2019, 9:33:55 PM12/2/19

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Wow!.....again!

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