Catto Prop

[Staton]

Anybody Running a Catto Prop? I have been told since it is technically a wood prop it is legal with a log book endorsement. T-crafts are Car 4 aircraft.

[Ragwing nut]

Re: Catto Prop

uuhhh no......

[Acroeric]

Re: Catto Prop

I have run one on a experimental O-200 (stock) powered Clipwing Tcraft for 30 or so hours and it is awesome. Not FAA approved though. It is the best prop for an O-200 powered clipwing I have ever tried and I have tried many. 76x39 Catto is the one but you need 9-1 forged pistons to turn it properly. Ignore pitch numbers with Catto- they do not equate to others. Smooth up to 3400 RPM which is as much as I could see turning it on the down lines.

[Jim Hartley]

Re: Catto Prop

I have been told since it is technically a wood prop it is legal with a log book endorsement. T-crafts are Car 4 aircraft.

Seems to be the case...Give Grant at Matanuska Air maintenance a call at 376-2626.

[astjp2]

Re: Catto Prop

Seems to be the case...Give Grant at Matanuska Air maintenance a call at 376-2626.

As soon as they put the fiberglass covering on it, it becomes a composite prop and thus different rules from what I was told. IT is only wood core.
Tim

[Jim Hartley]

Re: Catto Prop

As soon as they put the fiberglass covering on it, it becomes a composite prop and thus different rules from what I was told. IT is only wood core.
Tim

It would be prudent to get a difinitive answer from the FAA. Many are going with the log book entry and perhaps their interpretation of the regulations is wrong.

I understand that Catto is close to certification for many applications including the Taylorcraft.

[astjp2]

Re: Catto Prop

It would be prudent to get a difinitive answer from the FAA. Many are going with the log book entry and perhaps their interpretation of the regulations is wrong.

I understand that Catto is close to certification for many applications including the Taylorcraft.

Is that like being "almost Pregnant?"

[Ragwing nut]

Re: Catto Prop

if it is not a type certificated propeller, then it is not legal to install on a type certificated airplane. plain and simple. if that was the case it did not need to be certificated i would have told the faa to go *&%* themselves years ago.

[Edwin Otha]

Re: Catto Prop

Staton, Wood props are not regulated and covered under CAR 4a Chapter 4a597.
If you are building props for sale under a Type Certificate you must follow the technical information to the letter, or the FAA will pull your Production Certificate.
I use the CAR reference for installation and have had no problems for decades. It must meet the length and engine speed requirements.
Don't ask for permission it will be denied, that's just how the FAA works. Don't expose yourself and retire happy that's their motto.
EO