Deems Davis
Joined: 09 Jan 2006
Posts: 925
|
 Posted: Mon Jun 12, 2006 7:07 am Post subject: Experimental IFR w/o a certified GPS or looking for a copy |
 |
|
I understand the part about Experimental aircraft not requiring TSO'd or
certified equipment, but there has been an understanding that in order
to file and fly IFR/G you needed to have an IFR tso'd GPS on board. The
article I read stated that you did not if you as the pilot/builder could
determine that the GPS you used met the functional requirements of the
TSO. Hence the inquiry re 229C to find out just what hurdles are required.
Deems Davis # 406
Fuse
http://deemsrv10.com/
Tim Dawson-Townsend wrote:
| Quote: | Yeah, in general, TSOs are really equipment specs, not operational
specs, and TSO’ed equipment just helps with the certification of an
aircraft installation by STC or TC. (in fact, certified aircraft can
even get away with non-TSO equipment, if they can convince the FAA to
allow it under their TC.)
For experimental aircraft, in general, TSOs are not really necessary,
since there is no STC or TC. (just look at all of us using GRT or
other “non-TSO’ed” equipment for engine instruments, and the FAA
doesn’t ask us to prove they meet some spec.)
However, the FAA may have blurred lines by issuing ACs that blend
operational and equipment requirements. (specific to IFR GPS ops, etc.)
Isn’t FAA certification a wonderfully transparent and easy process?
TDT
------------------------------------------------------------------------
*From:* owner-rv10-list-server(at)matronics.com
[mailto:owner-rv10-list-server(at)matronics.com] *On Behalf Of *Eric Ekberg
*Sent:* Monday, June 12, 2006 8:50 AM
*To:* rv10-list(at)matronics.com
*Subject:* Re: Experimental IFR w/o a certified GPS or
looking for a copy of RTCA/DO-229C
I work on WAAS for the FAA and have the MOPS (229c) on pdf. There is
lots of good information in the document useful for building a WAAS
receiver, but I don't think you'll find what you are looking for
there. The word experimental occurs only 1 time and in the context of
"findings based on experimental data".
Eric
RV-10 #583 - empennage
On 6/11/06, *Deems Davis* <deemsdavis(at)cox.net
<mailto:deemsdavis(at)cox.net>> wrote:
<mailto:deemsdavis(at)cox.net>>
I recently read an article posted on Direct2. website
http://www.direct2avionics.com/pdfs/Using_GPS_for_IFR_flight.pd by a
Phd CFII that concludes that for EXPERIMENTAL aircraft, it was not
necessary for the aircraft to be equipped with a CERTIFIED GPS receiver
to legally file and fly IFR, PROVIDED that you, the pilot/mfg can
evaluate the GPS functionality, and find it provides all of the
necessary pilot input (as defined in the TSO) for IFR flight.
This sounded like it was worth looking into. I verified this opinion
with a competitor of Direct2. So off I go to study TSO-C146 the Standard
document for WAAS GPS, unfortunately there is nothing in the document
regarding functional requirements other than a reference to:
RTCA/DO-229B (which I learned has since been superceeded w/
RTCA/DO-229C). Another Google search reveals that this document is
available but with a cost which ranged from $108-370 per copy.
Does anyone know of a 'library' where this document could be 'rented' or
checked-out. a couple hundred bucks is a steep price for someone just
investigating an idea/thought.
Deems Davis # 406
Fuse
http://deemsrv10.com/
|
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
|
|
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
