A Maintenance Oriented Podcast For Airplane Owners, Pilots, and Mechanics

Month: July 2021

183 – I’m Bringing an Engine Cylinder to Oshkosh!

Here’s a sampling of items I’m planning to use for one of my presentations at Oshkosh this year. It’s called “Lapping Valves & Saving Cylinders.”

I’d love to see you there if you’re attending Airventure this year. It’s on Thursday afternoon, July 29, from 4-5:15 pm in Workshop Classroom C.

We’ll be lapping the exhaust valve from this Bonanza cylinder, and I invite you to come join the fun!

I’ll also have some other exhaust valves and rotocoils for display. Some of the rotocoils have been cut open so you can see the internal parts.

I’ll also be giving a presentation on Saturday morning about “Borescoping Your Own Exhaust Valves.”

I’ll have some exhaust valves and other items for demonstration at this presentation as well. I hope to see you at one or both seminars!

That’s all for this post, and I’ll be back here after Oshkosh!

182 – Plane Lands in Farm Field After Engine Failure

Note: I’m offering a 30% discount on the new shock strut servicing video course from now until Monday night, July 12 at midnight Eastern Daylight time.

Use the code “STRUT” for a 30% discount and pay only $67 instead of the normal price of $97.


Now for the engine failure story:

They got stopped about 35 yards before the trees!

It appears they kept flying the airplane with an oil pressure problem, and the engine finally failed catastrophically.

I took a trip with my fellow A&P, Kenneth, and we ended up removing the wings and sending the airplane home to Virginia on a trailer. Check it out:

Before we removed the wings, we drained a little more than 1 quart of oil from the sump (it’s an 8 quart engine,) and we removed the oil suction screen, which had A LOT of metal in it. Kenneth also noted that the #1 piston was not moving in the cylinder when we rotated the prop… oh, and the first time we rotated the prop, we could hear metal pieces falling down through the engine… not a good thing!

There was no obvious external damage visible on the engine… the internal damage was a whole different story! (The only strange thing was the oil dipstick was missing.)

The whole ordeal has been challenging to figure out, but the engine data from the JPI-830 engine monitor has been helpful.

After observing the engine data on a computer screen, it’s obvious there was a big problem with low oil pressure when the aircraft departed on the flight that would end in a farm field.

It’s been a crazy busy week after returning home, and yesterday, I finally had time to remove cylinder #1 from the engine, but it would not come off! How frustrating!

We think the steel cylinder barrel was peened and deformed inside the crankcase, which won’t let it come out.

So this morning, I removed the oil sump, and it was full of all kinds of interesting stuff… the exhaust lifter, which was in amazingly good condition… pieces of the connecting rod that came off the crankshaft journal… and other pieces of debris.

That tube at the end of the lifter is the oil suction tube that goes up to the oil suction screen and from there to the oil filter.

So there’s the story… so far.


Also mentioned in this episode:

Troy Schlote sent me an encouraging email and let me know he’s trying to get the word out about the new location of AeroSport, LLC in Florida.

If any of you need light sport maintenance, Rotax maintenance, or GA maintenance in the Deland, Florida area, be sure to stop in and meet Troy.

Troy Schlote
Director of Maintenance
A&P / IA
AeroSport, LLC 
www.fly-aerosport.com
T: (888) 444-1970

DeLand Municipal Airport (KDED)
921 Biscayne Blvd, Hangar E14
DeLand, FL 32724

The post “182 – Plane Lands in Farm Field After Engine Failure” appeared first at AirplaneOwnerMaintenance.com

181 – Strut Webinar Replay and Video Course Are Ready!

We had a great webinar last evening! Thanks to all who showed up on the call.

If you were not able to join us, but would like to see the replay, here’s the link:

The webinar replay will be available for the next 7 days.

Additionally, the much more detailed training is now available in our newly created Shock Strut Servicing Video Course.

Special bonus until Monday, July 5th at 12 midnight Eastern Daylight Time:

If you purchase the “Landing Gear Shock Strut Servicing” video course by that time, you’ll be included in two Q&A calls later in August, where you can ask me anything about shock struts or any related topics. I’d love to see you in those calls!


As promised, here’s a photo of the mix-matched brake parts I discovered this past week on a Piper Saratoga:

The metallic linings on the left are the correct ones; the organic linings on the right are the wrong parts! They were just sort of “riding free” on the pins of the backplate… it’s a good thing they didn’t fall out!

I think all my fellow A&P’s and IA’s out there will get a big kick out of this one… we see some crazy things in airplane maintenance!


Will I see you at Oshkosh / Airventure this year?

I’ll be presenting two presentations:

First one: “Lapping Valves and Saving Cylinders” on Thursday evening 4:00-5:15 pm in Workshop Classroom C.

Second one: “Borescope Your Own Exhaust Valves” on Saturday morning 8:30-9:45 am in Workshop Classroom A.

I hope to see you in one or both of those presentations!

Happy 4th of July, and have a great week!


The post “181 – Strut Webinar Replay and Video Course Are Ready!” appeared first at AirplaneOwnerMaintenance.com