Ragwing Owners - Fuel Pump AD

[Fearless Tower]

How many ragwing owners are aware of the AD on the fuel pump?

I ask because if you look at the AD's, it would appear on the surface that it does not apply. I think this is an error by the FAA.

This was previously mentioned by zero.one.victor in the following thread:
http://www.cessna170.org/forums/viewtop ... ilit=40585

The AD is here:
http://www.airweb.faa.gov/Regulatory_an ... 07-06%20ac

Here is the TCM Service Bulletin which states that it applies All “A” series, “C” series and O-200 engines with AC Fuel Pumps P/N40585, 40695 or 631391 installed:
http://www.7ts0.com/manuals/continental ... 81-8r1.pdf

Reading the AD alone, it doesn't list the C-145/O-300, however, the fuel pump for the ragwing is indeed the one listed in the AD and the service bulletin - p/n 40585.

Based on the previous thread, I asked my A&P IA to go ahead and inspect the pump since this is my first annual on the plane and since this inspection hasn't been done before on the plane Sure enough the pump is shot - very badly corroded.

If you have a ragwing, you might want to look into this one.

[DWood]

This AD does not apply to the 170.
However, it is good to inspect the fuel pump screen and look for corrosion at each annual.
Dan

[Fearless Tower]

This AD does not apply to the 170.

As the AD is written, that would appear to be correct.

However, the TCM SB (which provides the basis for the AD) DOES apply to p/n 40585 which is the '48 fuel pump. That is why I think the FAA's AD is incorrect.

[DWood]

The AD also calls out the 40585 pn. However, the AD does not call for the C145 or 0300A engines, It states the 4 cyl engines with these pumps. I do not know why they limited it to 4 cyl engines. I am sure they must of had a good reason.

81-07-06 TELEDYNE CONTINENTAL MOTORS: Amendment 39-4071. Applies to Continental A-65, A75, C75, C85, C90, A-100, C125, and O-200 series engines with AC fuel pumps, TCM part number 40585, 40695 or 631391 installed.

However, even tho I don't agree that the AD includes my engine or pump, I do inspect the screen and look for corrosion at every annual. I just don't record it as complying with the AD. You should follow your A&P IA instructions as they might differ. I do include the AD on my AD list and note it as DNA and also mark it to do each annual or 100 hour.
Thx,
Dan

[n3833v]

Some yrs ago I had to check mine for a repair and when opened, the housing was full of crude and when cleaned it was full of pin holes. I replaced the pump and has been great since. It never had fuel press, but flew with no problem, and I was checking lines and gauge and found this bad pump.

John

[Fearless Tower]

I think the problem/error is TCM rather than the FAA. If you look at the TCM SB chart to see what applies to your engine, it does not list this one for the O-300. But if you read the SB itself, it clearly does apply to ANY engine with 40585 installed.

[DWood]

Fearless:
It certainly is ok to comply with the TCM SB as the inspection is a good to do every year.
I bet you can't wait to get that bird flying!
Dan

[GAHorn]

This AD does not apply to the 170.

As the AD is written, that would appear to be correct.

However, the TCM SB (which provides the basis for the AD) DOES apply to p/n 40585 which is the '48 fuel pump. That is why I think the FAA's AD is incorrect.

It is my opinion that the error belongs to FAA...because TCM specifies "All “A” series, “C” series and O-200 engines with AC Fuel Pumps P/N 40585, 40695 or 631391 installed"... This includes all "C" series engines.

Unfortunately, FAA misread it and posted only the C125 of the 6-cylinder series. In fact...the AD should be revised and include the "O" series engines, as well.

The AD applies to an ENGINE.... not an airframe...and that's perhaps another error by FAA...perhaps not, on second thought. There's a lot of airframes that use those engines...and the engine AD should cover them that do.

[Glenn]

Hmmmm...just replace the fuel pump on my plane about two weeks ago. Am I going to have the install checked to make sure it complies?

[DWood]

Just to clarify my previous post

My comment

This AD does not apply to the 170.

Was in response to Fearless asking about ragwing owners (48 170s) as follows:

How many ragwing owners are aware of the AD on the fuel pump?