Lycoming Service Bulletins and AD's

Bcone1381

Bcone1381

Finished Patrol
Can someone school me on engine Lycoming Service Bullitens andAD's? I'm wondering how I would learn if my Bob Barrows IO-360-exp engine has any that apply.
 
It might be worth a call to Bob to see what he suggests and to see what level of effort he thinks make sense. The basic problem is that an experimental engine may not be a clear "make and model' from the manufacturer's point of view. I have one of Bob's engines. If you look in the log you will see that he has probably entered something like "built from parts to 0SMOH standard...". The serial number on my engine tells me that it was originally shipped to Mooney as an IO-360-AIA. It is certainly not that now. All I know for sure is that the case is from that engine. I imagine that the crankshaft and a lot of other internal parts are also from the same engine but I don't know for sure. I know that some of the parts are definitely not from that engine (it has a carburetor now, different magnetos, probably a new cam etc.). Short of having part level serial numbers and the ability to search ADs based on them, I'm not sure how far you can get.
 
I spoke to Bob about the recent Lycoming AD for conrods. He told me my engine doesn't have the Lycoming conrods.
 
Greg is correct. Nothing you can look up will apply without conferring with Mike/Bob about exactly what was installed. Or whomever you purchased an experimental build from.

pb
 
Did Bob happen to give you a stack of yellow tags with the engine, or make any entries that might specify any serial numbers for internal parts? I make up a chart for each of the accessories with their serial numbers, part numbers, etc.
 
500AGL said:
Greg is correct. Nothing you can look up will apply without conferring with Mike/Bob about exactly what was installed. Or whomever you purchased an experimental build from.

pb
Click to expand...

I will call Bob. When the FAA inspects my Build, and they see I have a lycoming engine and they ask for my AD list, I have no idea how to answer them. Its not a type certificated engine and does not conform to a type certificate. But i have no idea how to proceed if my Crank has an AD on it, or my camshaft. Should I know that data point? How?

jaredyates said:
Did Bob happen to give you a stack of yellow tags with the engine, or make any entries that might specify any serial numbers for internal parts? I make up a chart for each of the accessories with their serial numbers, part numbers, etc.
Click to expand...

He gave me one yellow tag for the crank, and sn for the new cylinders. I am doing as you say, making up a list with serialized componants and parts.

Nev said:
I spoke to Bob about the recent Lycoming AD for conrods. He told me my engine doesn't have the Lycoming conrods.
Click to expand...
That is a Classic piece of knowledge to share I think with the FAA! It proves the point that "Hey man, how can AD's apply to this engine when it does not conform to a type certificate.
 
Bcone1381 said:
Can someone school me on engine Lycoming Service Bullitens andAD's? I'm wondering how I would learn if my Bob Barrows IO-360-exp engine has any that apply.
Click to expand...

I guess the other aspect of this question is - are you ONLY interested in the engine core?

It may already be obvious; every other part which is bolted on to the engine (usually made by a company other than Lycoming) can have AD(s) too - and they are all just as important as ADs on the engine core. Any of those ADs can address a serious safety issue.

Unfortunately, a prudent operator needs to check all those AD details every other year at least. It is a rather time-consuming job.
 
Last edited:
Battson said:
I guess the other aspect of this question is - are you ONLY interested in the engine core?

It may already be obvious; every other part which is bolted on to the engine (usually made by a company other than Lycoming) can have AD(s) too - and they are all just as important as ADs on the engine core. Any of those ADs can address a serious safety issue.

Unfortunately, a prudent operator needs to check all those AD details every other year at least. It is a rather time-consuming job.
Click to expand...

This week I had a couple of FAA Safety folks in my hangar to issue me a repairman certificate for my airplane. I asked them how they thought the issue of ADs should be addressed with respect to an experimental engine. Essentially they said what Battson wrote above. You have to do it for everything else anyway so just create a larger list. It's a Lycoming engine so start with the serial number and closest make/model. Locate/document any other serial numbers/data you have. Add all the accessories on the engine as any of them can also have ADs. They agreed that I would likely have to take a little broader approach to reviewing the possible ADs and Service Bulletins but didn't feel that the basic process should be different.

Note that this was just a side discussion. I don't want to indicate that this was anything official.
 
In my situation, I purchased a Lycoming factory built YIO-360. Getting specific info on the engine based on the model assigned to the engine isn't straightforward. Still waiting on tech support to answer a list of questions I sent to them last week.
 
Tow things. 1) When I browsed the website in post #2, I used the engines I thought most closely aligned with my engine. O-360-a1a, and IO-360-b1b. I found a Crankshaft AD for a Superior crank, and a Connecting Rod AD. I thought I would see more than that.

2) There is a connecting rod AD. To understand if it applies to my engine I would need part number and dates that parts were shipped from Lycoming. I want that info, but have no access to it. I wonder how the FAA will view missing information.
 
You must log in or register to reply here.
Back
Top