Sorry but I have to disagree with your statements.
First off, your IA, if he has not already done so,
should have put together a document package with
copies of Approval A-706 which covers the F24R46 and
F24R46A series of airplanes. It states that the R46
uses the 6-440-C2 (175hp) engine. The R46A uses the
6-440-C5 engine (200hp). It also states that there is
no physical difference between each model of aircraft.
Also you should have a copy of Approval E-216 which
covers all of the 6-440 series engines. This document
outlines the differences between each engine and what
accessories are approved for use on the engine. The
Ranger parts manual shows what parts are used for the
175 and 200 hp engines and should be part of the
package. If necessary, sections of the engine
assembly manual can be part of the package to show
that there is no differences between the two. There
should have been prepared two copies of a FAA Form 337
Major Alteration field approval to install parts to
increase the hp to 200. An alteration of the engine
data plate is also required to indicate the timing
change from 22 degrees BTDC to 25 degrees BTDC should
be done. Two copies of a FAA Form 337 Major
Alteration field approval should be completed to
install the 200hp engine on the airframe. Your
registration and airworthiness certificate must also
be changed to reflect the model number change from
F24R46 to F24R46A as well. This information along
with the Fairchild Service Letter documenting the
engine model numbers between civilian and military
should also be a part of this package and plenty of
information for the ASI to review.
This is all FAA approved data, you are not doing
something new. Should FAA know this stuff? No. Why?
It is up to you, the owner and your IA to put
together this package for FAA review. If you talk to
one of the Airworthiness ASI's in your office, you
will find that they don't have the time to sit down
and start from scratch to research this information.
But!!! They will work with you and help you get what
you need. If you are not willing or do not feel
qualified to do this, they have a list of Designated
Airworthiness Representatives who can put this package
together for you for a negotiated fee. These guys are
retired FAA inspectors and know the ropes.
Don, I'm not lambasting you but I hope that I have
explained the process and helped you to understand
what is required to keep your aircraft legal and
airworthy. If you have any more questions, email me
off the list. I'll be happy to help you.
Mike
FMI
http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/MainFrame?OpenFrameSet
--- plsurflyin@aol.com wrote:
__________________________________________________> Mike,
>
> The FAA should know this stuff, that is their job.
>
> To be difficult on something like this is purely
> assinine and they should be
> told so, to their faces.
>
> don
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
http://mail.yahoo.com'