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

Tag: shoptowel

167 – Shop Towels in Wrong Places

In a previous episode, I shared the story about how I accidentally left a shop towel in an engine…

I got some great feedback from that episode, including the picture above… a flight student found a shop towel during preflight… in a place you would not expect.

It’s one more reminder to be extra-diligent during maintenance, and to have another person look over your work before installing the cowling.

In this week’s episode, I’m sharing the feedback I got from the story of the shop towel in the engine. (If you missed that story, you can find it in episode 165.)

There are some really good lessons to be learned… I want to say a big “thank you” to everyone who sent me feedback and helpful stories.


I’ve been receiving messages from airplane owners who are performing borescope inspections on their engine cylinders and exhaust valves… I always love to hear those stories, because I’m convinced borescoping can make flying safer by detecting failing exhaust valves before they come apart in flight.

Do you have pictures of your exhaust valves, but you’re not sure what they mean?

I can help with that, for sure.

I offer a service to evaluate borescope pictures for airplane owners.

It’s very easy to work with me, and here’s the process:

Go to this link, and make the appropriate payment:

https://paypal.me/airplaneownermaint?locale.x=en_US

Single engine 4 cylinder: $50

Single engine 6 cylinder: $70

Twin engine: $100

Send me an email with your borescope pictures (dean{at}airplaneownermaintenance{dot}com)

Within 48 hours, I’ll send you a report with evaluations of your borescope pictures to help you understand what the pictures are saying, and things to be aware of.


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165 – A Shop Towel in the Engine! Don’t Do What I Did!

Hi Friends!

I have a story for you today that I wish I didn’t have. But it’s true, so we might as well learn from it. Thankfully, everything turned out well on this one.

At Moody Aviation where I went to school years ago, we had a concept called “SYE.” It stood for “Share Your Experience.”

It was a concept to encourage us to take our mistakes and make a learning opportunity from them.

Listen to today’s podcast for the story of how I accidentally left a red shop towel inside an airplane engine… I hope I never do that again! Definitely an opportunity to learn “what not to do!”

Ok… it’s time to ‘fess up 🙂 I know I’m not the only one out here who’s done a dumb thing or two in airplane maintenance… so, if you’re willing to share your story, leave me a message here on the website, or shoot me an email dean{at}airplaneownermaintenance{dot}com

I’ll assume it’s ok to share the stories, without names (unless you ask me to share your name.) Thanks!


Another item we discussed in this episode is a Cessna 172 that would not start. It turned out to be a problem with the left magneto, but in the process of troubleshooting, we discovered the spark plugs had gone far too long without being cleaned.

Take a look:

And here’s the loose distributor electrode inside the magneto:


Other items we discussed in this episode:

  • An oil leak on a Twin Cessna (you might have seen the email I sent out about this.)
  • The items we used to fix that oil leak: Aviation Permatex, Continental silk thread P/N 641543 (If you only need a small amount, check with Fresno Airparts… they sell it for 20 cents per foot) and the third item used was Loctite 515. These 3 components, used properly, make an excellent seal for the oil pump cover.
  • Some interesting electrical information about a Cirrus SR22 – here’s the YouTube video I mentioned with some excellent visuals: https://www.youtube.com/watch?v=FCeHxk-fJvE

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