Prop strike and an AD question

[RV7A Flyer]

Originally Posted by FasGlas

You all can believe whatever you wish but don't be so sure you're right. I've been down this road with the FAA and they make the rules not the EAA.

Yes, and we all know how they're *always* right and no FSDO ever has a different (or wrong) interpretation of the rules.

q.v., e.g., compass requirements.

[RV7A Flyer]

Originally Posted by FasGlas

I've been an A&P for a long time. That's the way the rules are. What people do is up to them. A certified part doesn't change because it's location changes.

Case in point: http://www.superiorairparts.com/xp-s...engine-models/ These are not certified engines nor are they tagged as such

Why is this a "case in point"? As you said...*these are not certified engines*.

We're talking about "certified" engines, a la IO-360, IO-540, etc., with all the paperwork and extra added expense.

NOT something called "Experimental XP-whatever".

[Ironflight]

Originally Posted by FasGlas

You all can believe whatever you wish but don't be so sure you're right. I've been down this road with the FAA and they make the rules not the EAA.

I know of cases where FAA Inspectors licensing a homebuilt required the owner to remove the dataplate from the engine and replace it with something homemade because "once the engine was hung on an experimental, it is no longer configuration controlled, and therefore not compliant with its TC". So yeah - believe whatever you want, but it depends what FAA you have gone down the road with.....

[BobTurner]

Originally Posted by Ironflight

. So yeah - believe whatever you want, but it depends what FAA you have gone down the road with.....

+1. There's a lot of truth there....

[completely different topic, but when it came to getting a waiver to give type specific training in my RV, I had to educate the local FSDO abut their own rules, and even then, they only said okay after checking with some other FSDO]

[RV7A Flyer]

Originally Posted by Ironflight

"once the engine was hung on an experimental, it is no longer configuration controlled, and therefore not compliant with its TC".

I think that's what drives it...sometimes it's "once installed", other times you hear "once *operated*", but bottom line is really once it's on an experimental, it no longer complies with it's type certificate. (I supposed you could install one, then remove it without ever having run it, and might still be certified...maybe).

To RE-certify it, it would have to be inspected by an IA and signed off as being compliant, etc. Others can comment, but that doesn't seem to be a very common path (certified engine -> experimental installation -> REcertification of engine for installation on a TC'd plane).

[FasGlas]

Well with that kind of thinking I guess I can put a non certified engine on, lets say a Comanche, and now the plane is automatically experimental. Or ANY ADS-B on an experimental and it's now no long required to have FAA certification. No, folks you're wrong, but again it don't matter to me what you do.. Unless I'm inspecting it.

[David Paule]

Mike, have you talked this over with your insurance company? I wonder what they'll say.

Dave

[RV7A Flyer]

Originally Posted by FasGlas

Well with that kind of thinking I guess I can put a non certified engine on, lets say a Comanche, and now the plane is automatically experimental. Or ANY ADS-B on an experimental and it's now no long required to have FAA certification. No, folks you're wrong, but again it don't matter to me what you do.. Unless I'm inspecting it.

You're just being argumentative. The first situation isn't remotely like what we're talking about, and in the second, ADS-B has got nothing to do with it (and in fact, has *specific* requirements in 91.225, 227, etc....and even then, it may be possible to install NON-TSOd equipment if it meets the performance specs).

[Toobuilder]

Originally Posted by FasGlas

Well with that kind of thinking I guess I can put a non certified engine on, lets say a Comanche, and now the plane is automatically experimental...

Nope, it's automatically unairworthy - because it no longer conforms to the TC.

[rvbuilder2002]

Originally Posted by FasGlas

No... AD's and SB's only apply to certified engines (in this case). But.. Just because the engine is in an experimental plane that doesn't mean the engine is experimental. If the data tag is not marked EXP it would be subject to AD's.

The FAA's legal department has officially addressed both of these issues.

An engine installed in an Experimental aircraft is not certified... regardless of what data tag it has on it.

Which is why AD's don't apply to the engines in experimentals.

You are correct when you say "the FAA makes the rules". The problem is that some of the regional offices don't fully understand the rules (though they may think they do). The thing that matters is what the FAA's legal dept thinks. The have already issued official positions on these issues.